Agricultural and horticultural disease controller and a method for controlling the diseases

ABSTRACT

A method for using a compound represented by the general formula: ##STR1## (wherein R 1  and R 2  are the substituents, respectively, defined in the specification) for agricultural and horticultural disease control, and a composition used in said method.

This is a Continuation-in-Part of International Appln. No. PCT/JP96/00781 filed Mar. 26, 1996 which designated the U.S.

TECHNICAL FIELD

The present invention relates to an agricultural and horticultural disease controller containing as an active ingredient a 1,2,3-thiadiazole derivative represented by the general formula (1), or a salt thereof: ##STR2## wherein R¹ is 1 a hydrogen atom, 2 a (C₁ -C₁₂)alkyl group, 3 a halo(C₁ -C₁₂)alkyl group, 4 a (C₂ -C₁₂)alkenyl group, 5 a halo(C₂ -C₁₂)alkenyl group, 6 a (C₂ -C₁₂)alkynyl group, 7 a halo(C₂ -C₁₂)alkynyl group, 8 a (C₃ -C₆)cycloalkyl group, 9 an unsubstituted phenyl group, 10 a substituted phenyl group having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 11 a group represented by the formula: ##STR3## (wherein R³ and R⁴, which may be the same or different, are hydrogen atoms, (C₁ -C₁₂)alkyl groups or halo-(C₁ -C₁₂)alkyl groups, m is zero or an integer of 1 to 6, and R⁵ is a hydrogen atom; a (C₁ -C₁₂)alkyl group; a halo(C₁ -C₁₂)alkyl group; a (C₂ -C₁₂)alkenyl group; a (C₂ -C₁₂)alkynyl group; an unsubstituted phenyl group; a substituted phenyl group having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; an unsubstituted phenyl(C₁ -C₆)alkyl group; or a substituted phenyl(C₁ -C₆)alkyl group having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups), 12 a group represented by the formula: ##STR4## (wherein R³, R⁴ and m are as defined above, and R⁶ and R⁷, which may be the same or different, are hydrogen atoms; (C₁ -C₁₂)alkyl groups; halo(C₁ -C₁₂)alkyl groups; (C₂ -C₁₂)alkenyl groups; (C₂ -C₁₂)alkynyl groups; (C₁ -C₁₂)alkoxy(C₁ -C₆)alkyl groups; (C₁ -C₁₂)alkylthio(C₁ -C₆)alkyl groups; cyano(C₁ -C₁₂)alkyl groups; unsubstituted phenyl groups; substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; unsubstituted phenyl(C₁ -C₆)alkyl groups; or substituted phenyl(C₁ -C₆)alkyl groups having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; R⁶ and R⁷ being able to be taken together to represent a (C₄ -C₆)alkylene group which may contain an oxygen atom between adjacent carbon atoms of the carbon chain), 13 a group represented by the formula: ##STR5## (wherein R³, R⁴, R⁶ and R⁷, and n is an integer of 1 to 6), or 14 a group represented by the formula: ##STR6## [wherein R³, R⁴ and n are as defined above, A is --O--, ##STR7## (wherein R⁹ is a hydrogen atom, a (C₁ -C₁₂)alkyl group or a halo(C₁ -C₁₂)alkyl group), --S--, --SO--, --SO₂ --, ##STR8## wherein R⁹ is as defined above, and R¹⁰ is a hydrogen atom, a (C₁ -C₁₂)alkyl group or a halo(C₁ -C₁₂)alkyl group, R⁹ and R¹⁰ being able to be taken together to represent a (C₄ -C₆)alkylene group which may contain, between adjacent carbon atoms of the carbon chain, an oxygen atom, a sulfur atom or

    N--R.sup.11

(wherein R¹¹ is a hydrogen atom, a (C₁ -C₁₂)alkyl group or a halo(C₁ -C₁₂)alkyl group)}, or

    --N(R.sup.10)

(wherein R¹⁰ is as defined above), and R⁸ is a hydrogen atom; a (C₁ -C₁₂)alkyl group; a halo(C₁ -C₁₂)alkyl group; a (C₂ -C₁₂)alkenyl group; a (C₂ -C₁₂)alkynyl group; a (C₁ -C₁₂)alkoxy(C₁ -C₁₂)alkyl group; a (C₁ -C₁₂)alkylthio-(C₁ -C₁₂)alkyl group; a cyano(C₁ -C₁₂)alkyl group; an unsubstituted phenyl group; a substituted phenyl group having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; an unsubstituted phenyl(C₁ -C₆)alkyl group; a substituted phenyl(C₁ -C₆)alkyl group having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; an unsubstituted 5- or 6-membered heterocyclic ring having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom; or a substituted 5- or 6-membered heterocyclic ring having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, said substituted heterocyclic ring having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups], and R² is (i) a group represented by the formula:

    --X--R.sup.12

[wherein X is an oxygen atom or a sulfur atom, and R¹² is 1 a hydrogen atom, 2 a (C₁ -C₁₂)alkyl group, 3 a halo(C₁ -C₁₂)alkyl group, 4 a (C₂ -C₁₂)alkenyl group, 5 a halo(C₂ -C₁₂)alkenyl group, 6 a (C₂ -C₁₂)alkynyl group, 7 a halo(C₂ -C₁₂)alkynyl group, 8 a hydroxy(C₁ -C₆)alkyl group, 9 a (C₁ -C₁₂)alkoxy(C₁ -C₁₂)alkyl group, 10 a (C₁ -C₁₂)alkylthio(C₁ -C₁₂)alkyl group, 11 a (C₃ -C₆)cycloalkyl group, 12a (C₃ -C₆)cycloalkyl(C₁ -C₁₂)alkyl group, 13 an unsubstituted phenyl group, 14 a substituted phenyl group having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups, (C₂ -C₆)alkynyl groups, and (C₁ -C₆)alkoxycarbonyl (C₁ -C₆)alkyloxy groups, 15 an unsubstituted phenyl(C₁ -C₆)alkyl group, 16 a substituted phenyl(C₁ -C₆)alkyl group having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 17 a diphenyl(C₁ -C₆)alkyl group, 18 a phenoxy(C₁ -C₆)alkyl group, 19 a group represented by the formula:

    --B--N(R.sup.13)R.sup.14

{wherein B is a (C₁ -C₆)alkylene group which may be substituted by a (C₁ -C₆)alkyl group or a phenyl group, and R¹³ and R¹⁴, which may be the same or different, are hydrogen atoms; formyl groups; (C₁ -C₁₂)alkyl groups; (C₂ -C₁₂)alkenyl groups; (C₂ -C₁₂)alkynyl groups; (C₁ -C₆)alkylcarbonyl groups; unsubstituted phenyl groups; substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of hydrogen atom, halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups; phenylcarbonyl groups; unsubstituted 1,2,3-thiadiazol-5-yl-carbonyl groups; or substituted 1,2,3-thiadiazol-5-yl-carbonyl groups having a halogen atom or a (C₁ -C₆)alkyl group as the substituent; R¹³ and R¹⁴ being able to be taken together to represent a (C₄ -C₅)alkylene group which may contain, between adjacent carbon atoms of the carbon chain, an oxygen atom, a sulfur atom or

    N--R.sup.11

(wherein R¹¹ is as defined above)}, 20 a group represented by the formula:

    --C(R.sup.15)═C(R.sup.16)--R.sup.17

(wherein R¹⁵ is a hydrogen atom or a (C₁ -C₆)alkyl group, R¹⁶ is a hydrogen atom, a halogen atom or a (C₁ -C₆)alkyl group, and R¹⁷ is a nitro group, a cyano group, a (C₁ -C₆)alkylcarbonyl group, a (C₁ -C₆)alkoxycarbonyl group, a phenylcarbonyl group, or a substituted aminocarbonyl group having one or more substituents which may be the same or different and are selected from the group consisting of hydrogen atom, (C₁ -C₁₂)alkyl groups, unsubstituted phenyl group, and substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, cyano group, nitro group, (C₁ -C₆)alkyl groups and (C₁ -C₆)alkoxy groups, R¹⁵ and R¹⁷ being able to be taken together to represent a (C₃ -C₆)alkylene group which may be substituted by one or more (C₁ -C₆)alkyl group and/or an oxo group), 21 a group represented by the formula: ##STR9## (wherein two R¹⁸ 's, which may be the same or different, are hydrogen atoms, (C₁ -C₆)alkylcarbonyl groups, phenylcarbonyl groups, unsubstituted 1,2,3-thiadiazol-5-yl-carbonyl groups, or substituted 1,2,3-thiadiazol-5-yl-carbonyl groups having a halogen atom or a (C₁ -C₆)alkyl group as the substituent, and l is zero or an integer of 1 to 12), 22 a 5- or 6-membered heterocyclic (C₁ -C₆)alkyl group having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, 23 tri(C₁ -C₆)alkylsilyl(C₁ -C₆)alkyl groups, or 24 1,2,3-thiadiazol-5-yl-carbonyloxy-(C₁ -C₁₂)alkyl groups having on the ring a halogen atom or (C₁ -C₆)alkyl group as the substituent], (ii) a group represented by the formula:

    --O--N═C(R.sup.19)R.sup.20

[wherein R¹⁹ and R²⁰, which may be the same or different, are 1 hydrogen atoms, 2 halogen atoms, 3 nitro groups, 4 cyano groups, 5 (C₁ -C₁₂)alkyl groups, 6 halo(C₁ -C₁₂)alkyl groups, 7 (C₃ -C₆)cycloalkyl groups, 8 (C₂ -C₁₂)alkenyl groups, 9 (C₂ -C₁₂)alkynyl groups, 10 (C₁ -C₁₂)alkoxy(C₁ -C₁₂)alkyl groups, 11 (C₁ -C₁₂)alkoxycarbonyl groups, 12 unsubstituted phenyl groups, 13 substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 14 unsubstituted 5- or 6-membered heterocyclic rings having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, 15 substituted 5- or 6-membered heterocyclic rings having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, said substituted heterocyclic ring having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 16 groups represented by the formula;

    --SR.sup.5

(wherein R⁵ is as defined above), or 17 groups represented by the formula:

    --N(R.sup.6)R.sup.7

(wherein R⁶ and R⁷ are as defined above), R¹⁹ and R²⁰ being able to be taken together to represent 18 a (C₃ -C₆)cycloalkane ring or 19 a 5- or 6-membered heterocyclic ring containing, between adjacent carbon atoms of the carbon chain, one or more hetero atoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom], (iii) a group represented by the formula:

    --N(R.sup.21)R.sup.22

[wherein R²¹ and R²², which may be the same or different, are 1 hydrogen atoms, 2 (C₁ -C₁₂)alkyl groups, 3 unsubstituted halo(C₁ -C₁₂)alkyl groups, 4 substituted halo(C₁ -C₁₂)alkyl groups having a hydroxyl group or a (C₁ -C₆)alkoxy group as the substituent, 5 (C₂ -C₁₂)alkenyl groups, 6 (C₂ -C₁₂)alkynyl groups, 7 (C₁ -C₁₂)alkoxy(C₁ -C₆)alkyl groups, 8 (C₁ -C₁₂)alkylthio(C₁ -C₆)alkyl groups, 9 cyano(C₁ -C₁₂)alkyl groups, 10 substituted cyano(C₁ -C₆)alkyl groups having on the alkyl chain a substituent selected from the group consisting of (C₁ -C₆)alkoxy groups, (C₂ -C₆)alkenyloxy groups, (C₂ -C₆)alkynyloxy groups, (C₁ -C₆)alkylthio groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkylthio groups, phenoxy group, phenylthio group and pyrazol-1-yl group, 11 unsubstituted carbamoyl(C₁ -C₆)alkyl groups, 12 substituted carbamoyl(C₁ -C₆)alkyl groups having on the alkyl chain a substituent selected from the group consisting of (C₁ -C₆)alkoxy groups, (C₂ -C₆)alkenyloxy groups, (C₂ -C₆)alkynyloxy groups, (C₁ -C₆)alkylthio groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkylthio groups, phenoxy group, phenylthio group and pyrazol-1-yl group, 13 hydroxy-(C₁ -C₆)alkyl groups, 14 di(C₁ -C₆)alkoxy(C₁ -C₆)alkyl groups in which the (C₁ -C₆)alkoxy groups may be the same or different, 15 unsubstituted (C₁ -C₆)alkoxycarbonyl-(C₁ -C₆)alkyl groups, 16 substituted (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkyl groups having on the alkyl chain a substituent selected from the group consisting of (C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, (C₂ -C₆)alkenyloxy groups, (C₂ -C₆)alkynyloxy groups, (C₁ -C₆)alkylthio groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkoxycarbonyl(C₁ -C₆)alkylthio groups, phenyl group, phenyl(C₁ -C₆)alkyl group, phenoxy group, phenylthio group and pyrazol-1-yl group, 17 unsubstituted phenyl groups, 18 substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of 1) halogen atoms, 2) nitro group, 3) cyano group, 4) (C₁ -C₆)alkyl groups, 5) halo(C₁ -C₆)alkyl groups, 6) (C₁ -C₆)alkoxy groups, 7) halo(C₁ -C₆)alkoxy groups, 8) (C₁ -C₆)alkylthio groups, 9) halo(C₁ -C₆)alkylthio groups, 10) (C₂ -C₆)alkenyl groups, 11) (C₂ -C₆)alkynyl groups, 12) (C₁ -C₆)alkylcarbonyl groups, 13) carboxyl group, 14) (C₁ -C₁₂)alkoxycarbonyl groups, 15) methylenedioxy group, 16) phenyl group, 17) groups represented by the formula: ##STR10## (wherein R²³ and R²⁴, which may be the same or different, are hydrogen atoms; (C₁ -C₁₂)alkyl groups; halo-(C₁ -C₁₂)alkyl groups; (C₂ -C₁₂)alkenyl groups; (C₂ -C₁₂)alkynyl groups; unsubstituted phenyl groups; substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, cyano group, nitro group, (C₁ -C₆)alkyl groups and (C₁ -C₆)alkoxy groups; or 5- or 6-membered heterocyclic rings containing, between adjacent carbon atoms of the carbon chain, one or more hetero atoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom), 18) groups represented by the formula:

    --SO.sub.2 --R.sup.25

(wherein R²⁵ is a hydrogen atom, hydroxyl group, a (C₁ -C₁₂)alkyl group, a halo(C₁ -C₆)alkyl group, an unsubstituted phenyl group, a substituted phenyl group having as the substituent(s) one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, (C₁ -C₆)alkyl groups and (C₁ -C₆)alkoxy groups, unsubstituted 1,2,3-thiadiazol-5-yl group, or substituted 1,2,3-thiadiazol-5-yl groups having halogen atom, (C₁ -C₆)alkyl group or (C₁ -C₆)alkoxy group as the substituent), 19) groups represented by the formula: ##STR11## (wherein R²⁵ is as defined above), 20) groups represented by the formula: ##STR12## (wherein R²⁶ is a (C₁ -C₆)alkyl group, a phenyl group or a phenyl(C₁ -C₆)alkyl group), 21) groups represented by the formula:

    --NH--SO.sub.2 --R.sup.25

(wherein R²⁵ is as defined above), 22) groups represented by the formula: ##STR13## (wherein R²⁵ is as defined above), and 23) groups represented by the formula: ##STR14## (wherein R²⁶ is as defined above), 19 unsubstituted phenyl(C₁ -C₆)alkyl groups, 20 substituted phenyl(C₁ -C₆)alkyl groups having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 21 naphthyl groups, 22 groups represented by the formula:

    --(CH.sub.2).sub.p NHR.sup.18

(wherein R¹⁸ is as defined above, and p is an integer of 1 to 12), or 23 5- or 6-membered heterocyclic rings having one or more hetero atoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, R²¹ and R²² being able to be taken together to represent 24 a (C₄ -C₆)alkylene group which may contain an oxygen atom between adjacent carbon atoms of the carbon chain, or 25 a diaminomethylene group], (iv) a group represented by the formula:

    --N(R.sup.6)NHR.sup.27

[wherein R⁶ is as defined above, and R²⁷ is 1 a hydrogen atom, 2 a (C₁ -C₁₂)alkyl group, 3 a halo-(C₁ -C₁₂)alkyl group, 4 a (C₂ -C₁₂)alkenyl group, 5 a (C₂ -C₁₂)alkynyl group, 6 a (C₁ -C₁₂)alkoxy(C₁ -C₆)alkyl group, 7 a (C₁ -C₁₂)alkylthio(C₁ -C₆)alkyl group, 8 a cyano(C₁ -C₁₂)alkyl group, 9 an unsubstituted phenyl group, 10 a substituted phenyl group having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 11 an unsubstituted phenyl-(C₁ -C₆)alkyl group, 12 a substituted phenyl(C₁ -C₆)alkyl group having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₁ -C₆)alkylthio groups, halo(C₁ -C₆)alkylthio groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups, 13 a group represented by the formula: ##STR15## (wherein R⁶ is as defined above), 14 a group represented by the formula: ##STR16## (wherein R⁶ is as defined above), 15 a group represented by the formula: ##STR17## (wherein R⁶ and R⁷ are as defined above), or 16 a group represented by the formula:

    --SO.sub.2 --R.sup.6

(wherein R⁶ is as defined above)], (v) a group represented by the formula:

    --NHN(R.sup.6)R.sup.27

[wherein R⁶ and R²⁷ are as defined above, R⁶ and R²⁷ being able to be taken together to represent

    ═C(R.sup.28)R.sup.29

(wherein R²⁸ and R²⁹, which may be the same or different, are hydrogen atoms; (C₁ -C₆)alkyl groups; halo(C₁ -C₆)alkyl groups; (C3-C₆)cycloalkyl groups; unsubstituted phenyl groups; substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, (C₁ -C₆)alkyl groups and (C₁ -C₆)alkoxy groups; or 5- or 6-membered heterocyclic rings containing, between adjacent carbon atoms of the carbon chain, one or more hetero atoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom; R²⁸ and R²⁹ being able to be taken together to represent a (C₃ -C₆)cycloalkane ring or a 5- or 6-membered heterocyclic ring containing one or more sulfur atoms between adjacent carbon atoms of the carbon chain), or R⁶ and R²⁷ being able to be taken together with the nitrogen atom to which they are bonded, to represent a 5- or 6-membered heterocyclic ring which may contain, between adjacent carbon atoms of the carbon chain, one or more hetero atoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom], or (vi) a group represented by the formula:

    --N(R.sup.6)--OR.sup.30

(wherein R⁶ is as defined above, and R³⁰ is a hydrogen atom, a (C₁ -C₁₂)alkyl group, a halo(C₁ -C₁₂)alkyl group, a (C₃ -C₆)cycloalkyl group, a (C₂ -C₁₂)alkenyl group, a (C₂ -C₁₂)alkynyl group, an unsubstituted phenyl(C₁ -C₆)alkyl group, or a substituted phenyl(C₁ -C₆)alkyl group having on the ring one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, nitro group, cyano group, (C₁ -C₆)alkyl groups, halo(C₁ -C₆)alkyl groups, (C₁ -C₆)alkoxy groups, halo(C₁ -C₆)alkoxy groups, (C₂ -C₆)alkenyl groups and (C₂ -C₆)alkynyl groups).

BACKGROUND ART

Japanese Patent Unexamined Publication No. 54-9272 discloses 1,2,3-thiadiazole-5-carboxylic acid derivatives, a process for production thereof and an agent containing the derivative and having herbicidal and growth-regulating effects.

DISCLOSURE OF INVENTION

The present inventors earnestly investigated for developing a novel agricultural and horticultural disease controller and consequently found that 1,2,3-thiadiazole derivatives or salts thereof, which include some of the compounds disclosed in U.S. Pat No. 4,177,054, are useful for herbicide and growth segulater, whereby the present invention has been accomplished.

BEST MODE FOR CARRYING OUT THE INVENTION

In the definition of the substituents of the 1,2,3-thiadiazole derivative of the general formula (I) used as the active ingredient of the agricultural and horticultural disease controller of the present invention, the halogen atom includes chlorine atom, bromine atom, iodine atom and fluorine atom. The term "(C₁ -C₁₂)alkyl group" means a linear or branched alkyl group of 1 to 12 carbon atoms, such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl or the like. The term "halo-(C₁ -C₁₂)alkyl group" means a substituted and linear or branched alkyl group of 1 to 12 carbon atoms having as the substituent(s) one or more halogen atoms which may be the same or different. The term "(C₂ -C₆)alkenyl group" means a linear or branched alkenyl group of 2 to 6 carbon atoms having a double bond. The term "halo-(C₂ -C₆)alkenyl group" means a substituted and linear or branched alkenyl group of 2 to 6 carbon atoms having as the substituent(s) one or more halogen atoms which may be the same or different. The term "(C₂ -C₆)alkynyl group" means a linear or branched alkynyl group of 2 to 6 carbon atoms having a triple bond. The term "halo-(C₂ -C₆)alkynyl group" means a substituted and linear or branched alkynyl group of 2 to 6 carbon atoms having as the substituent(s) one or more halogen atoms which may be the same or different.

The term "5- or 6-membered heterocyclic ring having one or more heteroatoms which may be the same or different and are selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom" means any heterocyclic ring derived from furan, thiophene, pyrrole, oxazole, thiazole, isothiazole, pyrazole, imidazole, 1,2,3-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole, 1,2,4-triazole, pyridine, pyridazine, pyrimidine, pyrazine, pynolidine, piperidine, morpholine, thiamorpholine, dithiolane, dithian, piperazine, dioxelan, imidazolizine and the like.

Preferable examples of the substituents of the 1,2,3-thiadiazole derivative of the general formula (I) used in the present invention are as follows. There is preferably used a compound in which R¹ is a (C₁ -C₁₂)alkyl group, halo(C₁ -C₁₂)alkyl group, (C₃ -C₆)cycloalkyl group, (C₂ -C₁₂)alkenyl group, halo(C₂ -C₁₂)alkenyl group, (C₂ -C₁₂)alkynyl group, halo(C₂ -C₁₂)alkynyl group, unsubstituted phenyl group or substituted phenyl group, and R² is --X--R¹². There is more preferably used a compound in which R¹ is a (C₁ -C₆)alkyl group such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t-butyl, n-pentyl or n-hexyl, and R² is a hydroxyl group, its salt, a thiol group, its salt, an amide group, or an anilide group.

There is most preferably used a compound in which R¹ is a methyl group and R² is a hydroxyl group, its salt, a thiol group, its salt, an amide group, or an anilide group.

As the salt of the 1,2,3-thiadiazole derivative of the general formula (I), there can be exemplified salts with alkali metals such as sodium, potassium, etc.; salts with alkaline earth metals such as calcium, magnesium, etc.; unsubstituted ammonium salt; substituted ammonium salts having one or more substituents which may be the same or different and are selected from the group consisting of (C₁ -C₁₂)alkyl groups, unsubstituted phenyl group, substituted phenyl groups, unsubstituted benzyl group and substituted benzyl groups; and guanidium salt.

The 1,2,3-thiadiazole derivative of the general formula (I) or salt thereof used as the active ingredient of the agricultural and horticultural disease controller of the present invention can be produced, for example, by any of the processes exemplified below: ##STR18## wherein R¹ is as defined above, R' is a (C₁ -C₆)alkyl group, R" is an amino group or a (C₁ -C₆)alkyl group, and Hal is a halogen atom.

A compound of the general formula (XII) is reacted with a compound of the general formula (XI) to obtain a compound of the general formula (X). The compound (X) is cyclized after or without isolation to obtain a 1,2,3-thiadiazole derivative of the general formula (I-1). The derivative (I-1) is hydrolyzed after or without isolation to obtain a compound of the general formula (IX). The compound (IX) is halogenated after or without isolation, whereby the acid halide of the general formula (VIII) can be produced.

The compound of the general formula (XII) can be produced by the process described in J. Org. Chem., 43, 2087 (1978), Formation of C--C bonds, Vol. 3, p. 259, 1979 (Georg Thime Publishers, Stuttgart), etc.

From the acid halide of the general formula (VIII) produced by the above process, the 1,2,3-thiadiazole derivative of the general formula (I) or salt thereof used as the active ingredient of the agricultural and horticultural disease controller of the present invention can be produced, for example, by any of the processes illustrated below.

Production process 1. ##STR19## wherein R¹, R¹², R²¹, R²² and Hal are as defined above.

The acid halide of the general formula (VIII) is reacted with an alcohol of the general formula (III) to obtain a 1,2,3-thiadiazole derivative of the general formula (I-2). The compound (I-2) is reacted with an amine of the general formula (II) after or without isolation of the compound (I-2), whereby a 1,2,3-thiadiazole derivative of the general formula (I-3) can be produced.

The 1,2,3-thiadiazole derivative of the general formula (I-3) can be produced also by reacting the acid halide of the general formula (VIII) with an amine of the general formula (II).

Production process 2. ##STR20## wherein R¹⁹, R²⁰ and Hal are as defined above.

A 1,2,3-thiadiazole derivative of the general formula (I-4) can be produced by reacting the acid halide of the general formula (VIII) with a compound of the general formula (IV).

Production process 3. ##STR21## wherein R⁶, R²⁷ and Hal are as defined above.

A 1,2,3-thiadiazole derivative of the general formula (I-5) can be produced by reacting the acid halide of the general formula (VIII) with a compound of the general formula (V). Similarly, a 1,2,3-thiadiazole derivative of the general formula (I-6) can be produced by reacting the acid halide of the general formula (VIII) with a compound of the general formula (VI).

Production process 4. ##STR22## wherein R⁶, R³⁰ and Hal are as defined above.

A 1,2,3-thiadiazole derivative of the general formula (I-7) can be produced by reacting the acid halide of the general formula (VIII) with a compound of the general formula (VII).

Typical compounds as the 1,2,3-thiadiazole derivative of the general formula (I) or a salt thereof are listed in Table 1 but they are not intended in any way to limit the scope of the present invention.

The abbreviations in the R¹ column and R² column in Table 1 stand for the following compounds: ##STR23##

                                      TABLE 1                                      __________________________________________________________________________     No  R.sup.1         R.sup.2           Physical property                        __________________________________________________________________________      1  H               OH                m.p. 107.1° C.                       2 H OC.sub.2 H.sub.5 nD 1.5060 (20.1° C.)                               3 H NH.sub.2 m.p. 160.8° C.                                             4 H NH--Ph m.p. 132.0° C.                                               5 H NH--CH(Q.sub.5)--CN m.p. 163.9° C.                                  6 H NHOCH.sub.3 m.p. 113.1° C.                                          7 CH.sub.3 OH m.p. 188-189.5° C.                                        8 CH.sub.3 O--Na m.p. 230° C. (decomp.)                                 9 CH.sub.3 O--K m.p. 243° C. (decomp.)                                 10 CH.sub.3 O--Li m.p. 280° C. (decomp.)                                11 CH.sub.3 O--Ag m.p. 190° C. (decomp.)                                12 CH.sub.3 O--1/2Ca m.p. 250° C. (decomp.)                             13 CH.sub.3 O--NH.sub.4 m.p. 130° C. (decomp.)                          14 CH.sub.3 O--NH.sub.2 C(NH.sub.2)═NH.sub.2 m.p. 146° C.                                                15 CH.sub.3 OCH.sub.3 nD 1.5165                                               (23.2° C.)                          16 CH.sub.3 OC.sub.2 H.sub.5 nD 1.5075 (14.0° C.)                       17 CH.sub.3 OC.sub.3 H.sub.7 -n nD 1.4000 (12.5° C.)                    18 CH.sub.3 OC.sub.3 H.sub.7 -i nD 1.4400 (14.3° C.)                    19 CH.sub.3 OC.sub.4 H.sub.9 -s nD 1.4165 (24.2° C.)                    20 CH.sub.3 OC.sub.4 H.sub.9 -t nD 1.4245 (16.9° C.)                    21 CH.sub.3 OCH(CH.sub.2 CH.sub.3).sub.2 nD 1.3211 (24.5° C.)                                                22 CH.sub.3 OC.sub.8 H.sub.17 -n                                              nD 1.4900 (12.9° C.)                                                     23 CH.sub.3 OC.sub.11 H.sub.23 -n                                             nD 1.4946 (18.4° C.)                                                     24 CH.sub.3 OC.sub.15 H.sub.31 -n                                             NMR                                        25 CH.sub.3 OCH.sub.2 CH.sub.2 Br + OCH.sub.2 CH.sub.2 I = 2:1 nD                                                  1.5615 (20.7° C.)                   26 CH.sub.3 OCH.sub.2 CH═CH.sub.2 nD 1.5153 (15.0° C.)                                                   27 CH.sub.3 O(CH.sub.2).sub.8                                                 CH═CHCH.sub.2 CH═(CH.sub.2).                                           sub.4 CH.sub.3 nD 1.502 (26.3.degree                                           . C.)                                        ciscis                                                                       28 CH.sub.3 O--CH.sub.2 C.tbd.CH nD 1.3405 (13.8° C.)                   29 CH.sub.3 O-cyclo-C.sub.6 H.sub.11 nD 1.5248 (25.2° C.)                                                    30 CH.sub.3 O--CH.sub.2 -cyclo-C.su                                           b.3 H.sub.5 nD 1.5241 (26.5°                                            C.)                                        31 CH.sub.3 O--CH.sub.2 COOC.sub.2 H.sub.5 nD 1.5074 (25.5° C.)                                              32 CH.sub.3 O--CH.sub.2 COCH.sub.3                                            m.p. 55.7-56.8° C.                  33 CH.sub.3 O--Ph nD 1.5845 (20.6° C.)                                  34 CH.sub.3 O-(4-Cl--Ph) m.p. 77-80° C.                                 35 CH.sub.3 O-(2-CH.sub.3 --Ph) m.p. 62-64° C.                          36 CH.sub.3 O-(3-CH.sub.3 --Ph) m.p. 51-53° C.                          37 CH.sub.3 O-(4-CH.sub.3 --Ph) m.p. 31° C.                             38 CH.sub.3 O-(4-OCH.sub.3 --Ph) m.p. 73° C.                            39 CH.sub.3 O-(4-OCH(CH.sub.3)COOC.sub.2 H.sub.5 --Ph) nD 1.5433                                                   (26.5° C.)                          40 CH.sub.3 O--CH.sub.2 --Ph nD 1.5735 (13.1° C.)                       41 CH.sub.3 O--CH.sub.2 -(4-Cl--Ph) m.p. 85° C.                         42 CH.sub.3 O--CH.sub.2 -(4-NO.sub.2 --Ph) m.p. 100° C.                 43 CH.sub.3 O--CH.sub.2 -(4-CH.sub.3 --Ph) m.p. 52° C.                  44 CH.sub.3 O--CH.sub.2 (4-t-C.sub.4 H.sub.9 --Ph) nD 1.5558 (26.3.degre                                           e. C.)                                     45 CH.sub.3 O--CH.sub.2 (3-O--Ph--Ph) nD 1.6029 (26.4° C.)                                                   46 CH.sub.3 O--CH.sub.2 (2,4-Cl.sub                                           .2 --Ph) m.p. 74° C.                                                     47 CH.sub.3 O--CH.sub.2 (2,6-Cl.sub                                           .2 --Ph) m.p. 97° C.                                                     48 CH.sub.3 O--CH.sub.2 (3,5-Cl.sub                                           .2 --Ph) m.p. 81° C.                                                     49 CH.sub.3 O--CH.sub.2 (2-OCH.sub.                                           3 --Ph) m.p. 60° C.                 50 CH.sub.3 O--CH(Ph).sub.2 nD 1.6030 (26.4° C.)                        51 CH.sub.3 O--CH.sub.2 -(4-OCH.sub.3 --Ph) nD 1.5774 (26.2° C.)        52 CH.sub.3 O--CH.sub.2 --(F.sub.5 --Ph) m.p. 61° C.                    53 CH.sub.3 O--CH.sub.2 CH.sub.2 O--Ph m.p. 78° C.                      54 CH.sub.3 O--CH(CH.sub.3)--Ph nD 1.5631 (25.0° C.)                    55 CH.sub.3 O--CH.sub.2 CH.sub.2 Si(CH.sub.3).sub.3 nD 1.501 (20.2.degre                                           e. C.)                                     56 CH.sub.3 O--CH.sub.2 --Q.sub.1 nD 1.5730 (28.0° C.)                  57 CH.sub.3 O--CH.sub.2 -(4-CH.sub.3 --Q.sub.8) nD 1.5842 (25.0°                                            C.)                                        58 CH.sub.3 O--CH.sub.2 CH.sub.2 O--Q.sub.14 m.p. 137° C.                                                    59 CH.sub.3 O--CH.sub.2 CH.sub.2                                              --Q.sub.15 m.p. 102° C.                                                  60 CH.sub.3 O--CH.sub.2 CH.sub.2                                              O--Q.sub.10 nD 1.5280 (28.0°                                            C.)                                        61 CH.sub.3 O--CH.sub.2 --Q.sub.7 m.p. 68-74° C.                        62 CH.sub.3 O--Q.sub.17 nD 1.5678 (28.8° C.)                            63 CH.sub.3 O-5,5-(CH.sub.3).sub.2 --Q.sub.17) nD 1.5498 (28.7°                                             C.)                                        64 CH.sub.3 O--CH.sub.2 CH.sub.2 O--CO-(4-CH.sub.3 --Q.sub.8) NMR                                                   65 CH.sub.3 O--N═C.sub.6                                                  H.sub.10 -cyclo nD 1.461 (13.5.degre                                           e. C.)                                     66 CH.sub.3 O--N═C(CH.sub.3).sub.2 nD 1.5422 (19.8° C.)                                                  67 CH.sub.3 O--N═CH--Ph m.p.                                              113.5° C.                           68 CH.sub.3 O--N═C(CH.sub.3)--Ph m.p. 99.9° C.                      69 CH.sub.3 O--Q.sub.16 m.p. >185° C. (sublimation)                     70 CH.sub.3 O--N═Q.sub.12 m.p. 114.5° C.                            71 CH.sub.3 O--N═Q.sub.13 m.p. 100.1° C.                            72 CH.sub.3 SCH.sub.3 m.p. 40.1° C.                                     73 CH.sub.3 SC.sub.2 H.sub.5 nD 1.5229 (20.8° C.)                       74 CH.sub.3 SC.sub.3 H.sub.7 -n nD 1.4499 (20.9° C.)                    75 CH.sub.3 SC.sub.3 H.sub.7 -i nD 1.5620 (21.8° C.)                    76 CH.sub.3 SC.sub.4 H.sub.9 -i nD 1.4546 (21.6° C.)                    77 CH.sub.3 SC.sub.4 H.sub.9 -t nD 1.5743 (21.0° C.)                    78 CH.sub.3 SC.sub.8 H.sub.17 -n nD 1.5361 (25.4° C.)                   79 CH.sub.3 SC.sub.12 H.sub.25 -n nD 1.5261 (18.6° C.)                  80 CH.sub.3 S-cyclo-C.sub.6 H.sub.11 nD 1.5743 (20.8° C.)                                                    81 CH.sub.3 S-(4-CH.sub.3 --Ph) nD                                            1.6261 (21.2° C.)                   82 CH.sub.3 S--CH.sub.2 --Ph nD 1.6239 (21.1° C.)                       83 CH.sub.3 S--CH.sub.2 -(4-Cl--Ph) m.p. 74.5° C.                       84 CH.sub.3 NH.sub.2 m.p. 115° C.                                       85 CH.sub.3 NHCH.sub.3 m.p. 45° C.                                      86 CH.sub.3 N(CH.sub.3).sub.2 nD 1.5555 (13.2° C.)                      87 CH.sub.3 NHC.sub.2 H.sub.5 m.p. 44° C.                               88 CH.sub.3 N(C.sub.2 H.sub.5).sub.2 nD 1.5365 (13.7° C.)                                                    89 CH.sub.3 NHC.sub.3 H.sub.7 -i                                              m.p. 65° C.                         90 CH.sub.3 NHC.sub.4 H.sub.9 -n                                               91 CH.sub.3 NHC.sub.6 H.sub.11 -cyclo m.p. 98° C.                       92 CH.sub.3 NHCH.sub.2 CH.sub.2 OCH.sub.3 nD 1.5359 (26.0° C.)                                               93 CH.sub.3 NHCH.sub.2 CH.sub.2                                               CH.sub.2 OCH.sub.3 nD 1.5273                                                   (26.0° C.)                          94 CH.sub.3 NHCH.sub.2 CH(OCH.sub.3).sub.2 nD 1.5240 (26.1° C.)                                              95 CH.sub.3 N(CH.sub.2 CH═CH.su                                           b.2).sub.2 nD 1.5535 (27.5°                                             C.)                                        96 CH.sub.3 NHC(CH.sub.3).sub.2 --C.tbd.CH NMR                                 97 CH.sub.3 NHCH(CH.sub.3)CH.sub.2 OH NMR                                      98 CH.sub.3 NHCH.sub.2 CN m.p. 76-78° C.                                99 CH.sub.3 NHCH.sub.2 CH.sub.2 CN m.p. 86-87° C.                       100  CH.sub.3 N(CH.sub.2 CH.sub.2 CN).sub.2 m.p. 110-115° C.                                                 101  CH.sub.3 NHC(CH.sub.3)(i-C.sub                                           .3 H.sub.7)--CN nD 1.5235 (25.9.degr                                           ee. C.)                                    102  CH.sub.3 NHCH(C.sub.3 H.sub.7 -i)COOCH.sub.3 NMR                          103  CH.sub.3 NHCH(CH.sub.3)CH.sub.2 COOC.sub.2 H.sub.5 nD 1.5250                                                  (20.4° C.)                          104  CH.sub.3 NHPh m.p. 110° C.                                         105  CH.sub.3 NH(2-Cl--Ph) m.p. 101° C.                                 106  CH.sub.3 NH(3-Cl--Ph) m.p. 136-142° C.                             107  CH.sub.3 NH(4-Cl--Ph) m.p. 114° C.                                 108  CH.sub.3 NH(2-F--Ph) m.p. 120° C.                                  109  CH.sub.3 NH(3-F--Ph) m.p. 127° C.                                  110  CH.sub.3 NH(4-F--Ph) m.p. 103° C.                                  111  CH.sub.3 NH(2-CH.sub.3 --Ph) m.p. 115° C.                          112  CH.sub.3 NH(3-CH.sub.3 --Ph) m.p. 111° C.                          113  CH.sub.3 NH(4-CH.sub.3 --Ph) m.p. 109° C.                          114  CH.sub.3 NH(3-i-C.sub.3 H.sub.7 --Ph) NMR                                 115  CH.sub.3 NH(2-OCH.sub.3 --Ph) m.p. 112° C.                         116  CH.sub.3 NH(3-OCH.sub.3 --Ph) m.p. 107-110° C.                     117  CH.sub.3 NH(4-OCH.sub.3 --Ph) m.p. 117° C.                         118  CH.sub.3 NH(3-O-i-C.sub.3 H.sub.7 --Ph) NMR                               119  CH.sub.3 NH(4-NO.sub.2 --Ph) m.p. 175° C.                          120  CH.sub.3 NH(3-CN--Ph) m.p. 161° C.                                 121  CH.sub.3 NH(4-CN--Ph) m.p. 172° C.                                 122  CH.sub.3 NH(4-CO.sub.2 H--Ph) m.p. 257° C. (decomp.)                                                    123  CH.sub.3 NH(4-CO.sub.2                                                   CH.sub.3 --Ph) m.p. 133° C.                                              124  CH.sub.3 NH(4-CO.sub.2                                                   C.sub.2 H.sub.5 --Ph) m.p. 118.degre                                           e. C.                                      125  CH.sub.3 NH(3-COCH.sub.3 --Ph) m.p. 154° C.                        126  CH.sub.3 NH(4-COCH.sub.3 --Ph) m.p. 128° C.                        127  CH.sub.3 NH(2-Ph--Ph) m.p. 85.5° C.                                128  CH.sub.3 NH(2,4-Cl.sub.2 --Ph) m.p. 118-119° C.                    129  CH.sub.3 NH(2,5-Cl.sub.2 --Ph) m.p. 151-155° C.                    130  CH.sub.3 NH(3,4-Cl.sub.2 --Ph) m.p. 138-139° C.                    131  CH.sub.3 NH(3,5-Cl.sub.2 --Ph) m.p. 197-199° C.                    132  CH.sub.3 NH(2,4-(CH.sub.3).sub.2 --Ph) m.p. 98.3-98.9° C.                                               133  CH.sub.3 NH(2,6-(CH.sub.3).sub                                           .2 --Ph) m.p. 95-99° C.                                                  134  CH.sub.3 NH(3,5-(CF.sub.3).sub                                           .2 --Ph) m.p. 170° C.                                                    135  CH.sub.3 NH(3-OCH.sub.2                                                  O-4-Ph) m.p. 138° C.                                                     136  CH.sub.3 NH(2,4,6-(CH.sub.3).s                                           ub.3 --Ph) m.p. 115-117° C.                                              137  CH.sub.3 NH(2,6-Br.sub.2                                                 -4-OCF.sub.3 --Ph) m.p. 151.7.degree                                           . C.                                       138  CH.sub.3 NH(F.sub.5 --Ph) m.p. 124° C.                             139  CH.sub.3 NH--CH.sub.2 --Ph m.p. 53° C.                             140  CH.sub.3 N(CH.sub.3)--Ph paste NMR                                        141  CH.sub.3 NHC(CH.sub.3).sub.2 --Ph m.p. 139° C.                     142  CH.sub.3 NHCH.sub.2 -(4-Cl--Ph) m.p. 102-105° C.                   143  CH.sub.3 NHCH(CH.sub.3)(4-Cl--Ph) m.p. 108° C.                     144  CH.sub.3 NHCH(CH.sub.2 --Ph)COOCH.sub.3 NMR                               145  CH.sub.3 NH-naph m.p. 151° C.                                      146  CH.sub.3 NH--Q.sub.2 m.p. 130° C.                                  147  CH.sub.3 Q.sub.10 m.p. 92° C.                                      148  CH.sub.3 2,6-(CH.sub.3).sub.2 --Q.sub.10 m.p. 96-100° C.                                                  (cis)                                   149  CH.sub.3 NHCH.sub.2 --Q.sub.3 nD 1.5731 (26.1° C.)                 150  CH.sub.3 NHCH(OC.sub.2 H.sub.5)--CN paste NMR                             151  CH.sub.3 NHCH(OCH.sub.2 C.tbd.CH)--CN NMR                                 152  CH.sub.3 NHCH(Q.sub.5)--CN m.p. 157.3° C.                          153  CH.sub.3 NHCH(3,5-(CH.sub.3).sub.2 --Q.sub.5)--CN m.p. 155.6.degree                                           . C.                                       154  CH.sub.3 NHCH(SCH(CH.sub.3)--C.sub.2 H.sub.5)--CN paste NMR                                                    155  CH.sub.3 NHCH(S--Ph)--CN m.p.                                            116.5° C.                           156  CH.sub.3 NHSO.sub.2 --Ph m.p. 170-176° C.                          157  CH.sub.3 N═C(NH.sub.2).sub.2 m.p. 245° C.                      158  CH.sub.3 NHNH.sub.2 m.p. 143.8° C.                                 159  CH.sub.3 N(CH.sub.3)NH.sub.2 + NHNHCH.sub.3 = 4:1 m.p. 96.7-104.0.d                                           egree. C.                                  160  CH.sub.3 NHN(CH.sub.3).sub.2 m.p. 149-154° C.                      161  CH.sub.3 NHNHCO--Ph m.p. 183.4° C.                                 162  CH.sub.3 NH--Q.sub.10 m.p. 191.0° C.                               163  CH.sub.3 NHN═C(CH.sub.3).sub.2 m.p. 198° C.                    164  CH.sub.3 NHN═C(CH.sub.3)C.sub.2 H.sub.5 m.p. 152-153°                                              C.                                         165  CH.sub.3 NHN═CH--Ph m.p. 238° C.                               166  CH.sub.3 NHN═C(cyclo-C.sub.3 H.sub.5)Ph m.p. 156° C.                                                   (Mixture of E- and Z-forms)                                                 167  CH.sub.3 NHN═C(CH.sub.3)Ph                                            m.p. 260-270° C.                   168  CH.sub.3 NHN═C(CH.sub.3)(2-CH.sub.3 --Ph) m.p. 146.6°                                              C.                                            (upper spot in TLC)                                                         169  CH.sub.3 NHN═C(CH.sub.3)(2-CH.sub.3 --Ph) m.p. 153.0°                                              C.                                            Lower spot in TLC                                                           170  CH.sub.3 NHN═C(CH.sub.3)Q.sub.3 m.p. 286-288° C.                                                    171  CH.sub.3 NHN═C(CH.sub.3)Q.                                           sub.2 m.p. 215-216° C.                                                   172  CH.sub.3 NHN═Q.sub.12                                                m.p. 239.7° C.                      173  CH.sub.3 NHOCH.sub.3 m.p. 70° C.                                   174  CH.sub.3 NHOCH.sub.2 --Ph m.p. 73° C.                              175  C.sub.2 H.sub.5 OH m.p. 137.1-138.4° C.                            176  C.sub.2 H.sub.5 ONa m.p. 250° C. (decomp.)                         177  C.sub.2 H.sub.5 O--PhCH.sub.2 N(CH.sub.3).sub.3 m.p. 115-117.degree                                           . C.                                       178  C.sub.2 H.sub.5 O--NH.sub.3 C.sub.4 H.sub.9 -t m.p. 105-107°                                            C.                                        179  C.sub.2 H.sub.5 O-1/2 pyridinium m.p. 62-63° C.                    180  C.sub.2 H.sub.5 OCH.sub.3 nD 1.5093 (24.1° C.)                     181  C.sub.2 H.sub.5 OCH.sub.2 --Ph nD 1.5539 (23.7° C.)                                                     182  C.sub.2 H.sub.5 NH.sub.2 m.p.                                            139.0° C.                           183  C.sub.2 H.sub.5 NH--Ph m.p. 81.9° C.                               184  n-C.sub.3 H.sub.7 OC.sub.2 H.sub.5 nD 1.4958 (21.0° C.)                                                 185  i-C.sub.3 H.sub.7 OH m.p.                                                136.6° C.                           186  i-C.sub.3 H.sub.7 O--Na NMR                                               187  i-C.sub.3 H.sub.7 O--NH.sub.4 m.p. 169.9° C.                       188  i-C.sub.3 H.sub.7 OC.sub.2 H.sub.5 nD 1.4934 (20.9° C.)                                                 189  i-C.sub.3 H.sub.7 OC.sub.8                                               H.sub.17 -n nD 1.4845 (21.8°                                            C.)                                        190  i-C.sub.3 H.sub.7 OCH.sub.2 --Ph nD 1.5505 (23.8° C.)                                                   191  i-C.sub.3 H.sub.7 NH.sub.2                                               m.p. 137.3° C.                      192  i-C.sub.3 H.sub.7 NH--Ph m.p. 112.3° C.                            193  i-C.sub.3 H.sub.7 NH--CH.sub.2 --CN paste NMR                             194  i-C.sub.3 H.sub.7 NH--CH(Q.sub.5)--CN m.p. 107.4° C.                                                    195  n-C.sub.4 H.sub.9 OH m.p.                                                92.3° C.                            196  n-C.sub.4 H.sub.9 O--Na m.p. 188.5° C.                             197  n-C.sub.4 H.sub.9 OCH.sub.3 nD 1.4993 (22.3° C.)                   198  t-C.sub.4 H.sub.9 OH m.p. 111.1° C.                                199  t-C.sub.4 H.sub.9 OCH.sub.3 nD 1.5082 (13.0° C.)                   200  n-C.sub.5 H.sub.11 OH m.p. 86.2° C.                                201  n-C.sub.5 H.sub.11 OCH.sub.3 nD 1.4969 (22.5° C.)                  202  CH.sub.2 Cl OH m.p. 120.9° C.                                      203  CH.sub.2 Cl O--Na m.p. 280° C. (decomp.)                           204  CH.sub.2 Cl OCH.sub.3 nD 1.5315 (19.2° C.)                         205  CH.sub.2 Br OH m.p. 117.4° C.                                      206  CH.sub.2 Br OCH.sub.3 nD 1.5743 (13.1° C.)                         207  CF.sub.3 OH nD 1.4590 (23.7° C.)                                   208  CF.sub.3 OCH.sub.3 nD 1.4513 (23.6° C.)                            209  CF.sub.3 OC.sub.2 H.sub.5 nD 1.4451 (23.6° C.)                     210  CF.sub.3 NH.sub.2 m.p. 143.7° C.                                   211  CF.sub.3 NH--Ph m.p. 142.7° C.                                     212  CF.sub.3 NH(3-i-C.sub.3 H.sub.7 --Ph) m.p. 81.3° C.                                                     213  CF.sub.3 NH(3-i-C.sub.3                                                  H.sub.7 O--Ph) paste NMR                   214  CF.sub.3 NH-(3,5-(CF.sub.3).sub.2 --Ph) m.p. 156.2° C.                                                  215  CF.sub.3 NH--CH(Q.sub.5)--CN                                             m.p. 118.9° C.                      216  CF.sub.3 NHOCH.sub.3 m.p. 101.9° C.                                217  CHBrCH.sub.3 OH m.p. 114.8° C.                                     218  CHBrCH.sub.3 OCH.sub.3 nD 1.5545 (22.7° C.)                        219  CH.sub.2 CH.sub.2 CH.sub.2 Cl OCH.sub.3 nD 1.5271 (24.0°                                               C.)                                        220  cyclo-C.sub.3 H.sub.5 OH m.p. 157.1° C.                            221  cyclo-C.sub.3 H.sub.5 OCH.sub.3 m.p. 47.4° C.                      222  cyclo-C.sub.3 H.sub.5 OC.sub.2 H.sub.5 nD 1.5304 (22.1° C.)        223  cyclo-C.sub.3 H.sub.5 OCH.sub.2 --Ph nD 1.5815 (22.1° C.)                                               224  cyclo-C.sub.3 H.sub.5                                                    ON═Q.sub.12 m.p. 160.6°                                             C.                                         225  cyclo-C.sub.3 H.sub.5 NH.sub.2 m.p. 162.7° C.                      226  cyclo-C.sub.3 H.sub.5 NH--Ph m.p. 138.8° C.                        227  cyclo-C.sub.3 H.sub.5 NH-(3-i-C.sub.3 H.sub.7 --Ph) paste NMR                                                  228  cyclo-C.sub.3 H.sub.5                                                    NH(3-i-C.sub.3 H.sub.7 O--Ph) paste                                            NMR                                        229  CH.sub.2 OCH.sub.3 OH m.p. 104.8° C.                               230  CH.sub.2 OCH.sub.3 OCH.sub.3 m.p. 40.4° C.                         231  CH.sub.2 O--COCH.sub.3 OCH.sub.3 nD 1.5122 (19.1° C.)                                                   232  CH.sub.2 S--Ph OH m.p.                                                   133.6° C.                           233  CH.sub.2 S--Ph OCH.sub.3 nD 1.6210 (19.5° C.)                      234  CH.sub.2 S-(4-Cl--Ph) OH m.p. 143.8° C.                            235  CH.sub.2 S-(4-Cl--Ph) OCH.sub.3 nD 1.6268 (19.6° C.)                                                    236  COOH NHC(CH.sub.3)(i-C.sub.3                                             H.sub.7)--CN nD 1.4832 (25.1°                                            C.)                                       237  COOC.sub.2 H.sub.5 OH m.p. 68.9° C.                                238  COOC.sub.2 H.sub.5 OC.sub.2 H.sub.5 nD 1.5008 (21.4° C.)                                                239  COOC.sub.2 H.sub.5 OC.sub.4                                              H.sub.9 -n                                 240  COOC.sub.2 H.sub.5 NH--Ph m.p. 125.4° C.                           241  COOC.sub.4 H.sub.9 -n O--C.sub.4 H.sub.9 -n nD 1.4928 (24.2°                                            C.)                                       242  COOC.sub.4 H.sub.9 -n NHCH.sub.2 --Ph paste NMR                           243  CONHCH.sub.3 NHCH.sub.3 m.p. 195-196° C.                           244  CONHC.sub.3 H.sub.7 -i NHC.sub.3 H.sub.7 --I m.p. 92-96° C.        245  CONHCH.sub.2 CH.sub.2 OCH.sub.3 NHCH.sub.2 CH.sub.2 OCH.sub.3 m.p.                                            90-92° C.                           246  CONHCH.sub.2 Ph OC.sub.4 H.sub.9 -n paste NMR                             247  CONHCH.sub.2 Ph NHCH.sub.2 Ph m.p. 113.8-116.3° C.                 248  CON(CH.sub.3)CH.sub.2 Ph OC.sub.2 H.sub.5                                 249  CH.sub.2 COOH OH m.p. 159-160° C.                                     (decomp.)                                                                   250  CH.sub.2 COOCH.sub.3 OCH.sub.3 nD 1.5165 (21.4° C.)                                                     251  CH.sub.2 COOCH.sub.3 OC.sub.4                                            H.sub.9 -n nD 1.4956 (23.9°                                             C.)                                        252  CH.sub.2 CONHC.sub.3 H.sub.7 -i NHC.sub.3 H.sub.7 -i m.p. 146-156.d                                           egree. C.                                  253  CH.sub.2 CONHC.sub.5 H.sub.11 -i NHC.sub.5 H.sub.11 -i m.p.                                                   84-86° C.                           254  CH.sub.2 OH OH m.p. 147.1° C.                                      255  CH.sub.2 OH OCH.sub.3 nD 1.5390 (21.4° C.)                         256  CH.sub.2 O--CH═C(CN)(4-CH.sub.3 --Ph) OC.sub.2 H.sub.5 m.p.                                               69-76° C.                           257  CH.sub.2 N(CH.sub.3).sub.2 OCH.sub.3 m.p. 100.1° C.                                                     258  CH.sub.2 N(CH.sub.3)--Ph                                                 OC.sub.2 H.sub.5 nD 1.5761 (24.2.deg                                           ree. C.)                                   259  CH.sub.2 NHCO-(2-COOH--Ph) OH m.p. 157.5° C.                       260  CH.sub.2 --Q.sub.10 OCH.sub.3 nD 1.5335 (21.6° C.)                 261  CH.sub.2 -(2,6-(CH.sub.3).sub.2 --Q.sub.10) O--Na m.p. 73.7°                                            C.                                        262  CH.sub.2 -(2,6-(CH.sub.3).sub.2 --Q.sub.10) OCH.sub.3 nD 1.5169                                               (21.6° C.)                          263  CH.sub.2 --Q.sub.16 OCH.sub.3 m.p. 155.1° C.                       264  CH.sub.2 --Q.sub.6 OCH.sub.3 paste NMR                                    265  CH.sub.2 --Q.sub.7 OCH.sub.3 paste NMR                                    266  Ph OH m.p. 148.5° C.                                               267  Ph O--Na NMR                                                              268  Ph OC.sub.2 H.sub.5 nD 1.5888 (20.8° C.)                           269  Ph NH.sub.2 m.p. 185.9° C.                                         270  Ph NH--CH.sub.2 --CN m.p. 147.1° C.                                271  Ph NH--CH(Q.sub.5)--CN m.p. 146.3° C.                              272  2-F--Ph OH m.p. 138.8° C.                                          273  2-F--Ph O--Na NMR                                                         274  2-F--Ph OCH.sub.3 nD 1.5611 (22.6° C.)                             275  2-F-4-Cl-5-OCH.sub.2 COOC.sub.2 H.sub.5 --Ph OC.sub.2 H.sub.5 nD                                              1.5572 (21.5° C.)                   276  CH.sub.2 O--Ph OH m.p. 153.9° C.                                   277  CH.sub.2 O--Ph OCH.sub.3 nD 1.5772 (21.5° C.)                      278  CH.sub.2 O(4-Cl--Ph) OH m.p. 148.2° C.                             279  CH.sub.2 O(4-Cl--Ph) OCH.sub.3 m.p. 72° C.                         280  CH.sub.2 O(2-CH.sub.3 --Ph) OH m.p. 139.1-140.8° C.                                                     281  CH.sub.2 O(2-CH.sub.3 --Ph)                                              OC.sub.2 H.sub.5 nD 1.5579 (20.1.deg                                           ree. C.)                                   282  CH.sub.2 ON═C(CH.sub.3)(4-Cl--Ph) OC.sub.2 H.sub.5 paste NMR                                               283  CH.sub.2 SO.sub.2 Ph OH m.p.                                             161-162° C.                         284  CH.sub.2 SO.sub.2 Ph OC.sub.2 H.sub.5 m.p. 75.6-77.8° C.                                                285  CH.sub.2 SO.sub.2 Ph NHCH(CH.s                                           ub.3)--Ph m.p. 127-131° C.                                               286  CH.sub.2 S--Q.sub.11 OCH.sub.3                                            nD 1.6145 (24.2° C.)                                                    287  CH.sub.3 NHN═C(CH.sub.3)Q.                                           sub.4 m.p. >280° C.                 288  CH.sub.3 NHCH(OC.sub.2 H.sub.5)COOC.sub.2 H.sub.5 m.p. 68.8°                                            C.                                        289  CH.sub.3 NHCH(OC.sub.3 H.sub.7 -i)COOC.sub.2 H.sub.5 m.p. 52.1.degr                                           ee. C.                                     290  CH.sub.3 NHCH(Q.sub.5)COOC.sub.2 H.sub.5 m.p. 107.3° C.                                                 291  CH.sub.3 NHCH(OC.sub.2                                                   H.sub.5)CONH.sub.2 m.p. 136.9.degree                                           . C.                                       292  CH.sub.3 NHCH(CN)OCH.sub.2 COOC.sub.2 H.sub.5 nD 1.5217 (21.7.degre                                           e. C.)                                     293  CH.sub.3 NHCH(CN)SCH.sub.2 COOC.sub.2 H.sub.5 nD 1.5525 (21.5.degre                                           e. C.)                                     294  CH.sub.3 NHCH.sub.2 COOC.sub.2 H.sub.5 nD 1.5248 (21.5° C.)        295  CH.sub.3 NHCH(CCl.sub.3)OH m.p. 150° C.                            296  CH.sub.3 NHCH(CCl.sub.3)OC.sub.4 H.sub.9 -n paste NMR                     297  H O--Na                                                                   298  H O--C.sub.3 H.sub.7 -i                                                   299  H O--C.sub.6 H.sub.13 -n                                                  300  H O--C.sub.12 H.sub.25 -n                                                 301  H O--Ph                                                                   302  H O-(4-Cl--Ph)                                                            303  H O-(4-CH.sub.3 --Ph)                                                     304  H O--CH.sub.2 --Ph                                                        305  H O--CH.sub.2 -(4-Cl--Ph)                                                 306  CH.sub.3 O--C.sub.4 H.sub.9 -i                                            307  CH.sub.3 O--C.sub.6 H.sub.13 -n                                           308  CH.sub.3 O-(2-Cl--Ph)                                                     309  CH.sub.3 O-(3-Cl--Ph)                                                     310  CH.sub.3 O-(2-OCH.sub.3 --Ph)                                             311  CH.sub.3 O-(3-OCH.sub.3 --Ph)                                             312  CH.sub.3 O-(2,4-(Cl).sub.2 --Ph)                                          313  CH.sub.3 O-(3,4-(Cl).sub.2 --Ph)                                          314  CH.sub.3 O-(3,5-(Cl).sub.2 --Ph)                                          315  CH.sub.3 O--CH.sub.2 -(2-Cl--Ph)                                          316  CH.sub.3 O--CH.sub.2 -(3-Cl--Ph)                                          317  CH.sub.3 O--CH.sub.2 -(2-CH.sub.3 --Ph)                                   318  CH.sub.3 O--CH.sub.2 -(3-CH.sub.3 --Ph)                                   319  CH.sub.3 O--CH.sub.2 -(3-OCH.sub.3 --Ph)                                  320  CH.sub.3 O--C(CH.sub.3).sub.2 --Ph)                                       321  CH.sub.3 O--(CH.sub.2).sub.3 O--CO(4-CH.sub.3 --Q.sub.8)                  322  CH.sub.3 O--(CH.sub.2).sub.6 O--CO(4-CH.sub.3 --Q.sub.8)                  323  CH.sub.3 O--(CH.sub.2).sub.12 O--CO(4-CH.sub.3 --Q.sub.8)                 324  CH.sub.3 O--N═C(Cl)--Ph                                               325  CH.sub.3 O--N═C(CN)--Ph                                               326  CH.sub.3 O--N═C(CH.sub.3)--C.sub.6 H.sub.11 -cyclo                    327  CH.sub.3 O--N═C(CH.sub.3)--CH.sub.2 OCH.sub.3                         328  CH.sub.3 O--N═C(CH.sub.3)--COOCH.sub.3                                329  CH.sub.3 O--N═C(COOC.sub.2 H.sub.5).sub.2                             330  CH.sub.3 O--N═C(SCH.sub.3)--Ph                                        331  CH.sub.3 O--N═C(S--Ph)--Ph                                            332  CH.sub.3 O--N═C(Ph)--N(CH.sub.3).sub.2                                333  CH.sub.3 S--Ph                                                            334  CH.sub.3 S-(4-Cl--Ph)                                                     335  CH.sub.3 S-(4-OCH.sub.3 --Ph)                                             336  CH.sub.3 S--CH.sub.2 -(4-CH.sub.3 --Ph)                                   337  CH.sub.3 S--CH.sub.2 -(4-OCH.sub.3 --Ph)                                  338  CH.sub.3 S--CH.sub.2 COOC.sub.2 H.sub.5                                   339  CH.sub.3 S--Q.sub.2                                                       340  CH.sub.3 NH(3-C.sub.2 H.sub.5 --Ph) m.p. 87.4-88.5° C.                                                  341  CH.sub.3 NH(4-C.sub.2 H.sub.5                                            --Ph) m.p. 95.1-96.2° C.                                                 342  CH.sub.3 NH(2-COOC.sub.2                                                 H.sub.5 --Ph) m.p. 63° C.                                                343  CH.sub.3 NH(3-COOC.sub.2                                                 H.sub.5 --Ph) paste                        344  CH.sub.3 NH(4-COOC.sub.3 H.sub.7 -i-Ph) m.p. 125.2-127.5°                                              C.                                         345  CH.sub.3 NH(2-CONH.sub.2 --Ph) m.p. 222-223° C.                    346  CH.sub.3 NH(3-CONH.sub.2 --Ph) m.p. 232° C.                        347  CH.sub.3 NH(4-CONH.sub.2 --Ph) m.p. 244.8-248.2° C.                                                     348  CH.sub.3 NH(2-CONHCH.sub.3                                               --Ph) m.p. 162° C.                  349  CH.sub.3 NH(3-CONHCH.sub.3 --Ph) m.p. 181° C.                      350  CH.sub.3 NH(4-CONHCH.sub.3 --Ph) m.p. 196.3-198.1° C.                                                   351  CH.sub.3 NH(2-CONHC.sub.2                                                H.sub.5 --Ph) m.p. 166° C.                                               352  CH.sub.3 NH(3-CONHC.sub.2                                                H.sub.5 --Ph) m.p. 155° C.                                               353  CH.sub.3 NH(4-CONHC.sub.2                                                H.sub.5 --Ph) m.p. 190.8-193.4.degre                                           e. C.                                      354  CH.sub.3 NH(2-CONHC.sub.3 H.sub.7 -n-Ph) m.p. 165° C.                                                   355  CH.sub.3 NH(3-CONHC.sub.3                                                H.sub.7 -n-Ph) paste                       356  CH.sub.3 NH(4-CONHC.sub.3 H.sub.7 -n-Ph) m.p. 174.7-175.9°                                             C.                                         357  CH.sub.3 NH(2-CONHC.sub.3 H.sub.7 -i-Ph) m.p. 177° C.                                                   358  CH.sub.3 NH(3-CONHC.sub.3                                                H.sub.7 -i-Ph) m.p. 158° C.                                              359  CH.sub.3 NH(4-CONHC.sub.3                                                H.sub.7 -i-Ph) m.p. 223.7-225.9.degr                                           ee. C.                                     360  CH.sub.3 NH(3-CONHC.sub.4 H.sub.9 -n-Ph) paste                            361  CH.sub.3 NH(4-CONHC.sub.4 H.sub.9 -n-Ph) m.p. 157.4-159.3°                                             C.                                         362  CH.sub.3 NH(3-CONHC.sub.4 H.sub.9 -t-Ph) paste                            363  CH.sub.3 NH(4-CONHC.sub.4 H.sub.9 -t-Ph) m.p. 229.4-231.1°                                             C.                                         364  CH.sub.3 NH(2-CONHPh--Ph) m.p. 172-174° C.                         365  CH.sub.3 NH(4-CONHPh--Ph) m.p. 258.2-249.1° C.                     366  CH.sub.3 NH(2-CON(CH.sub.3).sub.2 --Ph) m.p. 153° C.                                                    367  CH.sub.3 NH(3-CON(CH.sub.3).su                                           b.2 --Ph) m.p. 143° C.                                                   368  CH.sub.3 NH(4-CON(CH.sub.3).su                                           b.2 --Ph) m.p. 176.8-178.6°                                             C.                                         369  CH.sub.3 NH(3-CON(C.sub.2 H.sub.5).sub.2 --Ph) paste                      370  CH.sub.3 NH(4-CON(C.sub.2 H.sub.5).sub.2 --Ph) m.p. 157.4-160.2.deg                                           ree. C.                                    371  CH.sub.3 NH(3-CONHC.sub.6 H.sub.13 -n-Ph) paste                           372  CH.sub.3 NH(3-CONH(4-Cl--Ph)--Ph) paste                                   373  CH.sub.3 NH(3-CO--Q.sub.10 --Ph) paste                                    374  CH.sub.3 NH(2-COOH--Ph) m.p. 223° C.                               375  CH.sub.3 NH(3-COOH--Ph) m.p. 237° C.                               376  CH.sub.3 NH(2-C.sub.3 H.sub.7 -n-Ph) m.p. 76-78° C.                                                     377  CH.sub.3 NH(4-C.sub.3 H.sub.7                                            -n-Ph) m.p. 76-82° C.                                                    378  CH.sub.3 NH(2-C.sub.3 H.sub.7                                            -i-Ph) m.p. 116-118° C.                                                  379  CH.sub.3 NH(4-C.sub.3 H.sub.7                                            -i-Ph) m.p. 115-117° C.                                                  380  CH.sub.3 NH(4-C.sub.4 H.sub.9                                            -n-Ph) paste                               381  CH.sub.3 NH(4-C.sub.4 H.sub.9 -sec-Ph) m.p. 89-91° C.                                                   382  CH.sub.3 NH(2-C.sub.4 H.sub.9                                            -t-Ph) m.p. 114-115° C.                                                  383  CH.sub.3 NH(4-C.sub.4 H.sub.9                                            -t-Ph) paste                               384  CH.sub.3 NH(4-C.sub.8 H.sub.17 -n-Ph) m.p. 51-52° C.                                                    385  CH.sub.3 NH(2-Br--Ph) m.p.                                               139.8-142.1° C.                     386  CH.sub.3 NH(3-Br--Ph) m.p. 144.4-146.3° C.                         387  CH.sub.3 NH(4-Br--Ph) m.p. 122.9-124.4° C.                         388  CH.sub.3 NH(2,6-Cl.sub.2 --Ph) m.p. 168° C.                        389  CH.sub.3 NH(2,3-Cl.sub.2 --Ph) m.p. 151° C.                        390  CH.sub.3 NH(2-C.sub.2 H.sub.5 --Ph) m.p. 99.5-101.0° C.                                                 391  CH.sub.3 NH(3,5-(CH.sub.3).sub                                           .2 --Ph) m.p. 135° C.                                                    392  CH.sub.3 NH(2,3-(CH.sub.3).sub                                           .2 --Ph) m.p. 124° C.                                                    393  CH.sub.3 NH(3,4-(CH.sub.3).sub                                           .2 --Ph) m.p. 116.8-118.2°                                              C.                                         394  CH.sub.3 NH(2,5-(CH.sub.3).sub.2 --Ph) m.p. 140° C.                                                     395  CH.sub.3 NH(2,4-(OCH.sub.3).su                                           b.2 --Ph) m.p. 136° C.                                                   396  CH.sub.3 NH(2,5-(OCH.sub.3).su                                           b.2 --Ph) m.p. 142° C.                                                   397  CH.sub.3 NH(3,4-(OCH.sub.3).su                                           b.2 --Ph) m.p. 133° C.                                                   398  CH.sub.3 NH(3,5-(OCH.sub.3).su                                           b.2 --Ph) m.p. 132° C.                                                   399  CH.sub.3 NH(4-OC.sub.2                                                   H.sub.5 --Ph) m.p. 105.9-106.7.degre                                           e. C.                                      400  CH.sub.3 NH(2-NH.sub.2 --Ph)                                              401  CH.sub.3 NH(3-NH.sub.2 --Ph) m.p. 168° C.                          402  CH.sub.3 NH(4-NH.sub.2 --Ph) m.p. 181° C.                          403  CH.sub.3 NH(4-CH.sub.3 CONH--Ph) m.p. 206° C.                      404  CH.sub.3 NH(4-PhCONH--Ph) m.p. 272° C.                             405  CH.sub.3 NH(4-(4-CH.sub.3 --Ph)SO.sub.2 NHPh) m.p. 179° C.                                              406  CH.sub.3 NH(2-NHCOCH.sub.3                                               --Ph)                                      407  CH.sub.3 NH(3-NHCOCH.sub.3 --Ph)                                          408  CH.sub.3 NH(4-NHCOC.sub.2 H.sub.5 --Ph)                                   409  CH.sub.3 NH(4-NHCOC.sub.3 H.sub.7 -i-Ph)                                  410  CH.sub.3 NH(2-NHCOC.sub.4 H.sub.9 -t-Ph)                                  411  CH.sub.3 NH(3-NHCOC.sub.4 H.sub.9 -t-Ph)                                  412  CH.sub.3 NH(4-NHCOC.sub.4 H.sub.9 -t-Ph)                                  413  CH.sub.3 NH(4-NHCOOCH.sub.3 --Ph)                                         414  CH.sub.3 NH(2-NHCOOC.sub.2 H.sub.5 --Ph)                                  415  CH.sub.3 NH(3-NHCOOC.sub.2 H.sub.5 --Ph)                                  416  CH.sub.3 NH(4-NHCOOC.sub.2 H.sub.5 --Ph)                                  417  CH.sub.3 NH(2-NHCOPh--Ph)                                                 418  CH.sub.3 NH(3-NHCOPh--Ph)                                                 419  CH.sub.3 NH(4-NHCO(6-Cl--Q.sub.1)--Ph)                                    420  CH.sub.3 NH(2-NHCO(4-CH.sub.3 --Q.sub.8)--Ph) m.p. 189° C.                                              421  CH.sub.3 NH(4-NHCO(4-CH.sub.3                                            --Q.sub.8)--Ph) m.p. 260° C.        422  CH.sub.3 NH(4-NHCONHC.sub.2 H.sub.5 --Ph)                                 423  CH.sub.3 NH(2-NHSO.sub.2 CH.sub.3 --Ph)                                   424  CH.sub.3 NH(3-NHSO.sub.2 CH.sub.3 --Ph)                                   425  CH.sub.3 NH(4-NHSO.sub.2 CH.sub.3 --Ph)                                   426  CH.sub.3 NH(2-NO.sub.2 --Ph)                                              427  CH.sub.3 NH(3-NO.sub.2 --Ph) m.p. 140° C.                          428  CH.sub.3 NH(2-OH--Ph)                                                     429  CH.sub.3 NH(3-OH--Ph)                                                     430  CH.sub.3 NH(4-OH--Ph)                                                     431  CH.sub.3 NH(2-O--COCH.sub.3 --Ph)                                         432  CH.sub.3 NH(3-O--COCH.sub.3 --Ph)                                         433  CH.sub.3 NH(4-O--COCH.sub.3 --Ph)                                         434  CH.sub.3 NH(2-O--COC.sub.4 H.sub.9 -t-Ph)                                 435  CH.sub.3 NH(3-O--COC.sub.4 H.sub.9 -t-Ph)                                 436  CH.sub.3 NH(4-O--COC.sub.4 H.sub.9 -t-Ph)                                 437  CH.sub.3 NH(3-O--COPh--Ph)                                                438  CH.sub.3 NH(4-O--COPh--Ph)                                                439  CH.sub.3 NH(2-O--CO(4-CH.sub.3 --Q.sub.8)--Ph m.p. 112° C.                                              440  CH.sub.3 NH(3-O--CO(4-CH.sub.3                                            --Q.sub.8)--Ph m.p. 152° C.        441  CH.sub.3 NH(4-O--CO(4-CH.sub.3 --Q.sub.8)--Ph m.p. 167° C.                                              442  CH.sub.3 NH(2-O--COOC.sub.2                                              H.sub.5 --Ph)                              443  CH.sub.3 NH(3-O--COOC.sub.2 H.sub.5 --Ph)                                 444  CH.sub.3 NH(4-O--COOC.sub.2 H.sub.5 --Ph)                                 445  CH.sub.3 NH(4-O--COOC.sub.2 H.sub.5 --Ph)                                 446  CH.sub.3 NH(4-CH.sub.3 SO.sub.2 --Ph)                                     447  CH.sub.3 NH(4-CF.sub.3 SO.sub.2 --Ph)                                     448  CH.sub.3 NH(5-CH.sub.3 --Q.sub.18) m.p. 156° C.                    449  CH.sub.3 NH(2-CH.sub.3 --Q.sub.19) m.p. 189° C.                    450  CH.sub.3 NH(4,6-(CH.sub.3).sub.2 --Q.sub.11) paste                        451  CH.sub.3 NHCH.sub.2 CONH(4-Cl--Ph) m.p. 211° C.                    452  CH.sub.3 NHCH.sub.2 CONH(4-CH.sub.3 --Ph) m.p. 212° C.                                                  453  CH.sub.3 NHCH.sub.2 CONH(4-OCH                                           .sub.3 --Ph) m.p. 188° C.                                                454  CH.sub.3 NHCH.sub.2 CONHCH.sub                                           .2 (4-CH.sub.3 --Ph) paste                 455  CH.sub.3 Q.sub.20 -(4-CO(4-CH.sub.3 --Q.sub.8)) m.p. 234°                                              C.                                         456  CH.sub.3 NH-(5-Br--Q.sub.11)                                              457  CH.sub.3 NH-(4,6-(Cl).sub.2 --Q.sub.11)                                   458  CH.sub.3 NH-(4,6-(CH.sub.3).sub.2 --Q.sub.11) m.p. 153° C.                                              459  CH.sub.3 NH--Q.sub.1                 460  CH.sub.3 NH--Q.sub.21                                                     461  CH.sub.3 NH-(4-CH.sub.3 --Q.sub.21)                                       462  CH.sub.3 NH-(4-Ph--Q.sub.21)                                              463  CH.sub.3 NH-(5-CF.sub.3 --Q.sub.19)                                       464  CH.sub.3 NH-(5-SC.sub.2 H.sub.5 --Q.sub.19)                               465  CH.sub.3 NH-(3-Cl-5-CF.sub.3 --Q.sub.2)                                   466  CH.sub.3 NH-(4,6-(CH.sub.3).sub.2 --Q.sub.2)                              467  CH.sub.3 NH--Q.sub.22                                                     468  CH.sub.3 NH(CH.sub.2).sub.2 NH--CO(4-CH.sub.3 --Q.sub.8)                  469  CH.sub.3 NH(CH.sub.2).sub.3 NH--CO(4-CH.sub.3 --Q.sub.8)                  470  CH.sub.3 NH(CH.sub.2).sub.6 NH--CO(4-CH.sub.3 --Q.sub.8)                  471  CH.sub.3 NH(CH.sub.2).sub.12 NH--CO(4-CH.sub.3 --Q.sub.8)                 472  CH.sub.3 NH(Ph)--NH.sub.2                                                 473  CH.sub.3 NHNHPh                                                           474  CH.sub.3 NHNHCOCH.sub.3                                                   475  CH.sub.3 NHNHCOC.sub.6 H.sub.13 -n                                        476  CH.sub.3 NHNHCOC.sub.12 H.sub.25 -n                                       477  CH.sub.3 NHNHCOCF.sub.3                                                   478  CH.sub.3 NHNHCO(4-Cl--Ph)                                                 479  CH.sub.3 NHNHCO(4-CH.sub.3 --Ph)                                          480  CH.sub.3 NHNHCO(4-OCH.sub.3 --Ph)                                         481  CH.sub.3 NHNHCOOCH.sub.3                                                  482  CH.sub.3 NHNHCOO--Ph                                                      483  CH.sub.3 NHNHCOO--CH.sub.2 Ph                                             484  CH.sub.3 NHNHCONH.sub.2                                                   485  CH.sub.3 NHNHCONHCH.sub.3                                                 486  CH.sub.3 NHNHCONH--Ph                                                     487  CH.sub.3 NHNHSO.sub.2 CH.sub.3                                            488  CH.sub.3 NHNHSO.sub.2 --Ph                                                489  CH.sub.3 NHOC.sub.2 H.sub.5                                               490  CH.sub.3 NHOC.sub.3 H.sub.7 -n                                            491  CH.sub.3 NHOC.sub.3 H.sub.7 -i                                            492  CH.sub.3 NHOC.sub.4 H.sub.9 -n                                            493  CH.sub.3 NHOC.sub.4 H.sub.9 -t                                            494  CH.sub.3 N(CH.sub.3)OCH.sub.3                                             495  CH.sub.3 NHOCH.sub.2 CH═CH.sub.2                                      496  CH.sub.3 N(OH)(4-Cl--Ph) m.p. 186° C. (decomp.)                    497  CH.sub.3 N(OCH.sub.3)(4-Cl--Ph) m.p. 98° C.                        498  CONH.sub.2 NH.sub.2 m.p. 270° C. (sublim.)                         499  CH.sub.3 NH(3-Cl-4-CH.sub.3 --Ph) m.p. 114° C.                   __________________________________________________________________________      Note: "cyclo" means a cyclic C.sub.6 H.sub.11 group.                     

Table 2 shows ¹ H-NMR data of the 1,2,3-thiadiazole derivatives having a physical property expressed by the word "oil", "paste" or "NMR" in Table 1.

                  TABLE 2                                                          ______________________________________                                         No        .sup.1 H-NMR [CDCl.sub.3 /TMS, δ value (ppm)                   ______________________________________                                          24       0.879(5, 3H), 1.255(br, 8H), 1.75(m, 2H),                               2.974(s, 1H), 4.340(t, 2H).                                                    64 2.97(s, 6H), 4.68(s, 4H).                                                   96 1.595(s, 1H), 1.757(s, 6H), 2.910(s, 3H), 5.98                              (br, 1H).                                                                      97 1.305(d, 2H), 1.85(br, 1H), 2.903(s, 3H),                                   3.735(m, 2H), 4.25(m, 1H), 6.42(br, 1H).                                      102 1.00(t, 6H), 2.30(m, 1H), 2.950(s, 3H), 3.800                               (s, 3H), 4.740(m, 1H), 6.42(br, 1H).                                          114 1.342(d, 6H), 2.948(s, 3H), 4.567(sept, 1H),                                6.743(d, 1H), 7.011(d, 1H), 7.23-7.28(m, 2H),                                  7.659(s, 1H).                                                                 118 1.2695(d, 6H), 2.9355(sept, 1H), 2.9868(s,                                  3H), 7.1260(d, 1H), 7.32-7.40(m, 3H), 7.47(br,                                 s, 1H).                                                                       140 2.818(s, 3H), 3.482(s, 3H), 7.11(m, 2H), 7.36                               (m, 3H).                                                                      144 2.792(s, 3H), 3.25(m, 1H), 3.822(s, 3H), 5.05                               (m, 1H), 6.32(br, 1H), 7.05-7.40(m, 5H).                                      150 1.26(t, 3H), 2.90(s, 3H), 3.74(q, 2H), 6.11                                 (d, 1H), 8.03(br, d, 1H).                                                     151 2.637(t, 1H), 2.971(s, 1H), 4.425(m, 2H),                                   6.374(d, 1H), 7.13(br, d, 1H).                                                154 1.01(m, 3H), 1.39(q, 3H), 1.65(m, 2H), 2.94                                 (s, 3H), 3.10(m, 1H), 6.07(m, 1H), 7.05(br, t,                                 1H).                                                                          186 1.33(d, 6H), 4.13(m, 1H).                                                  193 1.487(d, 6H), 3.73(sept, 1H), 4.365(d, 2H),                                 6.78(br, s, 1H)                                                               213 1.345(d, 6H), 4.568(s, 1H), 6.70-7.30(m, 4H),                               7.92(br, s, 1H).                                                              227 1.20-1.40(m, 10H), 2.53(m, 1H), 2.89(m, 1H),                                7.05-7.50(m, 4H), 8.30(br, s, 1H).                                            228 1.20-1.40(m, 10H), 2.50(m, 1H), 4.55(m, 1H),                                6.72(q, 1H), 7.0-7.3(m, 3H), 8.30(br, s, 1H).                                 242 0.98(t, 3H), 1.49(m, 2H), 1.84(m, 2H), 4.50                                 (t, 2H), 4.63(d, 2H), 7.3-7.6(m, 5H), 10.23                                    (br, s, 1H).                                                                  246 0.98(t, 3H), 1.49(m, 2H), 1.84(m, 2H), 4.50                                 (t, 2H), 4.63(d, 2H), 7.3-7.6(m, 5H), 10.23                                    (br, s, 1H).                                                                  264 4.000(s, 3H), 5.854(s, 2H), 7.039(s, 1H),                                   7.142(s, 1H), 7.742(s, 1H).                                                   265 4.001(s, 3H), 6.104(s, 2H), 7.934(s, 1H),                                   8.378(s, 1H).                                                                 267 7.3-7.5(m, 3H), 8.12(q, 2H)                                                273 7.1-7.5(m, 4H)                                                             282 1.41(t, 3H), 2.27(s, 3H), 4.44(q, 2H), 5.88                                 (s, 2H), 7.2-7.6(m, 4H).                                                      296 0.939(t, 3H), 1.45(m, 2H), 1.65(m, 2H), 2.970                               (s, 3H), 3.82(m, 2H), 5.75(d, 1H), 6.48(d,                                     1H).                                                                          343 1.38(t, 3H), 2.96(s, 3H), 4.32(dd, 2H), 7.47                                (t, 1H), 7.85(d, 1H), 8.00-8.05(br, 2H), 8.21                                  (br, 1H).                                                                     355 0.86(t, 3H), 1.46(m, 2H), 2.87(s, 3H), 3.07                                 (dd, 2H), 6.43(m, 1H), 7.39(d, 2H), 7.97(br,                                   1H), 8.10(m, 1H), 9.75(br, 1H).                                               360 0.92(t, 3H), 1.36(m, 2H), 1.51(m, 2H), 3.21                                 (dd, 2H), 6.21(br, 1H), 7.44(d, 2H), 7.98(s,                                   1H), 8.08(br, 1H), 9.19(br, 1H).                                              362 1.36(s, 9H), 2.84(s, 3H), 6.05(s, 1H), 7.34                                 (m, 2H), 7.81(s, 1H), 7.90(m, 1H), 9.41(br,                                    1H).                                                                          369 1.03-1.21(m, 6H), 3.19(dd, 2H), 3.41(dd, 2H),                               6.87(d, 1H), 7.24(m, 2H), 7.73(d, 1H), 10.21                                   (br, 1H).                                                                     371 0.89(t, 3H), 1.20-1.70(m, 8H), 3.24(dd, 2H),                                6.21(br, 1H), 7.40-7.50(m, 1H), 7.99(s, 1H),                                   8.05(br, 1H), 9.01(br, 1H).                                                   372 2.95(s, 3H), 7.25-7.95(m, 7H), 8.06-8.14(br,                                2H), 8.56(br, 1H).                                                            373 2.89(s, 3H), 3.4-3.8(br, 8H), 7.02(d, 1H),                                  7.35(t, 1H), 7.47(br, 1H), 7.87(d, 1H), 9.53                                   (br, 1H).                                                                     380 0.93(t, 3H), 1.37(m, 2H), 1.59(m, 2H), 2.61                                 (t, 2H), 2.97(s, 1H), 7.22(d, 2H), 7.45(d,                                     2H), 7.53(br, 1H).                                                            383 1.32(s, 9H), 2.96(s, 3H), 7.34(d, 2H), 7.49                                 (d, 2H), 7.88(br, 1H).                                                        450 2.42(s, 6H), 2.90(s, 3H), 6.82(s, 1H), 8.6-9.5                              (br, 1H).                                                                     454 2.28(s, 3H), 2.81(s, 3H), 3.92(d, 2H), 4.26                                 (d, 2H), 7.12(m, 4H), 8.51(br, 1H), 9.08(br,                                   1H).                                                                        ______________________________________                                    

The 1,2,3-thiadiazole derivatives of the general formula (I) or salts thereof according to the present invention are useful for agricultural and horticultural disease control. For example, the compounds listed in Table 1 are very effective in controlling various diseases, for instance, rice blast (Pyricularia oryzae), rice sheath blight (Rhizoctonia solani), rice helminthosporium leaf spot (Cochliobolus miyabeanus), powdery mildew of various host plants, such as powdery mildew of barley and wheat (Erysiphe graminis), oats crown rust (Puccinia coronata), rust of other plants, tomato late blight (Phytophthora infestans), late blight or Phytophthora rots of other plants, downy mildew of various plants, such as cucumber downy mildew (Pseudoperonospora cubensis) and grape downy mildew (Plasmopara viticola), apple scab (Venturia inaequalis), apple alternaria leaf spot (Alternaria mali), pear black spot (Alternaria kikuchiana), citrus melanose (Diaporthe citri), cucumber bacterial blight (Pseudomonas syringae pv. lachrymans), tomato bacterial wilt (Pseudomonas solanacearum), cabbage black rot (Xanthomonas campestris), citrus canker (Xanthomonas citri (Hasse) Dowson), rice bacterial leaf blight (Xanthomonas oryzae), cabbage bacterial soft rot (Erwinia carotovora), and tobacco mosaic (Tobacco mosaic virus).

The agricultural and horticultural disease controller of the present invention is markedly effective in controlling the above-exemplified diseases which damage paddy field crops, upland crops, fruit trees, vegetables, other crops, flowers and ornamental plants, and the like. Therefore, the desired effects of the agricultural and horticultural disease controller of the present invention can be obtained by applying the disease controller to the paddy field water, stalks and leaves of fruit trees, vegetables, other crops, flowers and ornamental plants, soil, etc., at a season at which the diseases are expected to occur, before their occurrence or at the time when their occurrence is confirmed.

In general, the agricultural and horticultural disease controller of the present invention is used after being prepared into a conveniently usable form according to an ordinary manner for preparation of agrochemicals.

That is, the 1,2,3-thiadiazole derivative of the general formula (I) or salt thereof according to the present invention and, optionally, an adjuvant are blended with a suitable inert carrier in a proper proportion and prepared into a suitable preparation form such as a suspension, emulsifiable concentrate, soluble concentrate, wettable powder, granules, dust or tablets through dissolution, dispersion, suspension, mixing, impregnation, adsorption or sticking.

The inert carrier used in the present invention may be either solid or liquid. As the solid carrier, there can be exemplified soybean flour, cereal flour, wood flour, bark flour, saw dust, powdered tobacco stalks, powdered walnut shells, bran, powdered cellulose, extraction residue of vegetables, powdered synthetic polymers or resins, clays (e.g. kaolin, bentonite, and acid clay), talcs (e.g. talc and pyrophyllite), silica powders or flakes (e.g. diatomaceous earth, silica sand, mica and white carbon, i.e. synthetic, high-dispersion silicic acid, also called finely divided hydrated silica or hydrated silicic acid, some of commercially available products contain calcium silicate as the major component), activated carbon, powdered sulfur, powdered pumice, calcined diatomaceous earth, ground brick, fly ash, sand, calcium carbonate powder, calcium phosphate powder and other inorganic or mineral powders, chemical fertilizers (e.g. ammonium sulfate, ammonium phosphate, ammonium nitrate, urea and ammonium chloride), and compost. These carriers may be used alone or as a mixture thereof.

The liquid carrier is that which itself has solubility or which is without such solubility but is capable of dispersing an active ingredient with the aid of an adjuvant. The following are typical examples of the liquid carrier and can be used alone or as a mixture thereof. Water; alcohols such as methanol, ethanol, isopropanol, butanol and ethylene glycol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone and cyclohexanone; ethers such as ethyl ether, dioxane, Cellosolve, dipropyl ether and tetrahydrofuran; aliphatic hydrocarbons such as kerosene and mineral oils; aromatic hydrocarbons such as benzene, toluene, xylene, solvent naphtha and alkylnaphthalenes; halogenated hydrocarbons such as dichloroethane, chloroform, carbon tetrachloride and chlorobenzene; esters such as ethyl acetate, diisopropyl phthalate, dibutyl phthalate and dioctyl phthalate; amides such as dimethylformamide, diethylformamide and dimethylacetamide; nitriles such as acetonitrile; and dimethyl sulfoxide.

The following are typical examples of the adjuvant, which are used depending upon purposes and used alone or in combination in some cases, or need not to be used at all.

To emulsify, disperse, dissolve and/or wet an active ingredient, a surfactant is used. As the surfactant, there can be exemplified polyoxyethylene alkyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene higher fatty acid esters, polyoxyethylene resinates, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monooleate, alkylarylsulfonates, naphthalenesulfonic acid condensation products, ligninsulfonates and higher alcohol sulfate esters.

Further, to stabilize the dispersion of an active ingredient, tackify it and/or bind it, there may be used adjuvants such as casein, gelatin, starch, methyl cellulose, carboxymethyl cellulose, gum arabic, polyvinyl alcohols, turpentine, bran oil, bentonite and ligninsulfonates.

To improve the flowability of a solid product, there may be used adjuvants such as waxes, stearates and alkyl phosphates.

Adjuvants such as naphthalenesulfonic acid condensation products and polycondensates of phosphates may be used as a peptizer for dispersible products.

Adjuvants such as silicon oils may also be used as a defoaming agent.

The content of the active ingredient may be varied as required. In dusts or granules, the suitable content thereof is from 0.01 to 50% by weight. In emulsifiable concentrates or flowable wettable powders, it is also from 0.01 to 50% by weight.

The present inventive agricultural and horticultural disease controller containing the 1,2,3-thiadiazole derivative of the general formula (I) or a salt thereof as an active ingredient is used to control various diseases in the following manner. That is, it is applied to a crop on which the diseases are expected to occur, or a site where the occurrence of the diseases is undesirable, as it is or after being properly diluted with or suspended in water or the like, in an amount effective for control of the diseases. For example, to control the diseases of paddy rice, said disease controller can be used by a method such as submerged application to a regular paddy field, application to a rice nursery bed, dressing of seeds for direct sowing on flooded paddy field, or seed disinfection.

The applying dosage of the present inventive agricultural and horticultural disease controller containing the 1,2,3-thiadiazole derivative of the general formula (I) or a salt thereof as an active ingredient is varied depending upon various factors such as a purpose, diseases to be controlled, a growth state of a plant, tendency of disease occurrence, weather, environmental conditions, a preparation form, an application method, an application site and application time. It may be properly chosen in the range of 0.1 g to 10 kg (in terms of the active ingredient) per 10 ares depending upon purposes.

The present inventive agricultural and horticultural disease controller containing the 1,2,3-thiadiazole derivative of the general formula (I) or a salt thereof as an active ingredient may be used in admixture with other agricultural and horticultural disease controllers in order to expand both spectrum of controllable diseases and the period of time when effective applications are possible or to reduce the dosage.

Typical examples and test examples of the present invention are described below but they should not be construed as limiting the scope of the invention.

In the examples, parts are all by weight.

EXAMPLE 1

    ______________________________________                                         Each compound listed in Table 1                                                                         50 parts                                                Xylene 40 parts                                                                Mixture of polyoxyethylene 10 parts                                            nonylphenyl ether and calcium                                                  alkylbenzenesulfonate                                                        ______________________________________                                    

An emulsifiable concentrate was prepared by mixing uniformly the above ingredients to effect dissolution.

EXAMPLE

    ______________________________________                                         Each compound listed in Table 1                                                                          3 parts                                                Clay powder 82 parts                                                           Diatomaceous earth powder 15 parts                                           ______________________________________                                    

A dust was prepared by mixing uniformly and grinding the above ingredients.

EXAMPLE

    ______________________________________                                         Each compound listed in Table 1                                                                          5 parts                                                Mixed powder of bentonite and clay 90 parts                                    Calcium lignin sulfonate  5 parts                                            ______________________________________                                    

Granules were prepared by mixing the above ingredients uniformly, and kneading the resulting mixture together with a suitable amount of water, followed by granulation and drying.

EXAMPLE

    ______________________________________                                         Each compound listed in Table 1                                                                         20 parts                                                Mixture of kaolin and synthetic, 75 parts                                      high-dispersion silicic acid                                                   Mixture of polyoxyethylene  5 parts                                            nonylphenyl ether and calcium                                                  alkylbenzenesulfonate                                                        ______________________________________                                    

A wettable powder was prepared by mixing uniformly and grinding the above ingredients.

TEST EXAMPLE 1 Controlling Effect on Rice Blast by Submerged Application

Rice plants at the 5 to 6 leaf stage cultivated in a 1/10000-are pot were subjected to submerged application of a chemical containing each compound listed in Table 1 as an active ingredient, in a dosage of 200 g/10 a in terms of the active ingredient. After standing in a greenhouse for 1 week, the plants were inoculated with a suspension of spores of blast fungus (Pyricularia oryzae) by spraying.

After the inoculation, the plants were allowed to stand in a moist chamber for 1 day and then a greenhouse for 6 days to cause the disease sufficiently. Then, lesions in each leaf were counted and then compared with those on the untreated plot, and the controlling degree was calculated, whereby the effect was judged according to the following criterion.

    ______________________________________                                         Effect      Controlling degree (%)                                             ______________________________________                                         A           100-95                                                               B 94-85                                                                        C 84-60                                                                        D 59-0                                                                       ______________________________________                                    

As a result of the above test, the compounds listed in Table 1 were found to have a marked blast-controlling activity. Of these compounds, the following were rated C or higher: compound Nos. 1 to 42, 44 to 61, 62 to 89, 92 to 95, 97 to 100, 103 to 131, 133 to 136, 138 to 140, 142, 144 to 166, 168 to 192, 194 to 196, 198 to 200, 202 to 222, 224, 225, 227 to 233, 237, 240 253 to 255, 268, 269, 272, 273, 276, 278, 287 to 296, 342 to 346, 348, 351, 354 to 357, 361, 362, 366, 369, 372, 374 and 375. In particular, the following were rated A, namely, the following had an excellent blast-controlling activity: compound Nos. 1, 3, 5 to 19, 21, 24 to 26, 28, 29, 32, 33, 37 to 40, 52, 54, 55, 57 to 59, 64 to 68, 70 to 74, 77 to 80, 84, 92, 93, 99, 103, 104 to 121, 123 to 125, 128, 130, 131, 138, 145, 146, 149, 152, 153, 156, 157, 159, 160, 169, 172 to 174, 175 to 192, 194, 198, 199, 202, 208 to 210, 213, 215 to 221, 224, 225, 227 to 229, 233, 237, 253, 278, 288 to 290, 294, 343, 344, 346, 355, 356, 362, 372, 374 and 375.

TEST EXAMPLE 2 Controlling Effect on Barley Powdery Mildew

Barley plants at the 3.5 leaf stage cultivated in a pot were applied with a spray mix containing each compound listed in Table 1 as an active ingredient at the concentration of 200 ppm. After standing thus treated plants in a greenhouse for 1 week, the plants were inoculated with spores of powdery mildew fungus (Erysiphe graminis f. sp. hordei)

After the inoculation, the plants were allowed to stand in a greenhouse for 1 week to cause the disease sufficiently. Then, lesions in each leaf were counted and then compared with those on the untreated plot, and the controlling degree was calculated, whereby the effect was judged according to the following criterion.

    ______________________________________                                         Effect           Controlling degree (%)                                        ______________________________________                                         A                100-80                                                          B 79-60                                                                        C 59-0                                                                       ______________________________________                                    

As a result of the above test, the compounds listed in Table 1 were found to have a marked powdery mildew-controlling activity. Of these compounds, the following were rated B or higher: compound Nos. 7 to 9, 15, 16, 33, 40, 66, 72, 84, 104 to 107, 111 to 113, 115 to 117, 122 to 124, 128, 130, 139, 145, 180, 193, 194, 215, 217, 218 and 224. In particular, the following were rated A: compound Nos. 7 to 9, 15, 16, 33, 40, 66, 72, 84, 104 to 107, 111 to 113, 115 to 117, 122 to 124, 128, 130, 139, 145, 180, 193, 215, 217, 218 and 224.

REFERENTIAL PRODUCTION EXAMPLE 1

Production of sodium 4-ethyl-1,2,3-thiadiazole-5-carboxylate (compound No. 8) ##STR24##

To a solution of 0.13 g of sodium hydroxide in 3 ml of ethanol was added 0.5 g of 4-ethyl-1,2,3-thiadiazole-5-carboxylic acid, and the reaction was carried out at room temperature for 24 hours.

After completion of the reaction, the solvent was distilled off under reduced pressure and the crude product thus obtained was recrystallized from ethanol to obtain 0.44 g of the desired-compound.

Physical property: m.p. 250° C. (decomp.).

Yield: 77%.

REFERENTIAL PRODUCTION EXAMPLE 2

Production of t-butylammonium 4-ethyl-1,2,3-thiadiazole-5-carboxylate (compound No. 185) ##STR25##

In 3 ml of ethanol was dissolved 0.4 g of 4-ethyl-1,2,3-thiadiazole-5-carboxylic acid, after which 0.19 g of t-butylamine was added to the solution and the reaction was carried out at room temperature for 24 hours.

After completion of the reaction, the crystals precipitated in the reaction solution were collected by filtration and washed with n-hexane to obtain 0.54 g of the desired compound.

Physical property: m.p. 105-107° C.

Yield: 93%.

REFERENTIAL PRODUCTION EXAMPLE 3

Production of N-isopropyl-5-(N'-isopropyl-carbamoyl)-1,2,3-thiadiazol-4-ylacetamide (compound No. 252) ##STR26##

In dimethyl sulfoxide was suspended 0.1 g of sodium hydride, after which 1 g of isopropylamine was added to the suspension, followed by ice-cooling. Then, 0.5 g of methyl 5-methoxycarbonyl-1,2,3-thiadiazol-4-ylacetate was added and the resulting mixture was stirred at room temperature and allowed to stand for 24 hours.

After completion of the reaction, the reaction mixture was poured into ice water and the desired compound was extracted with ethyl acetate. The extracted solution was washed with water, dried over anhydrous sodium sulfate, and then distilled under reduced pressure to remove the solvent. The crude product thus obtained was purified by a column chromatography to obtain 0.23 g of the desired compound.

Physical property; m.p. 146-156° C.

Yield: 37%.

REFERENTIAL PRODUCTION EXAMPLE 4

Production of ethyl 4-(2-methylphenoxymethyl)-1,2,3-thiadiazole-5-carboxylate (compound No. 281) ##STR27##

In 20 ml of dimethylformamide was suspended 0.5 g of sodium hydride, after which 1.57 g of 2-methylphenol was added to the suspension and the resulting mixture was stirred at room temperature for 5 minutes. The reaction mixture was cooled with ice, followed by adding thereto 3 g of ethyl 4-chloromethyl-1,2,3-thiadiazolecarboxylate, and the resulting mixture was stirred at room temperature and allowed to stand for 24 hours.

After completion of the reaction, the reaction mixture was poured into ice water and the desired compound was extracted three times with ethyl acetate.

The extracted solution was washed with water, dried over anhydrous sodium sulfate, and then distilled under reduced pressure to remove the solvent, whereby 1.33 g of the desired compound was obtained.

Physical property: nD 1.5579 (20.1° C.).

Yield: 33%.

REFERENTIAL PRODUCTION EXAMPLE 5

Production of isopropyl 4-methyl-1,2,3-thiadiazole-5-carboxylate (compound No. 18) ##STR28##

To 1.0 g (6.9 mmoles) of 4-methyl-1,2,3-thiadiazole-5-carboxylic acid were added 40 ml of thionyl chloride and 2 drops of dimethylformamide at room temperature, and the resulting mixture was refluxed with heating for 3 hours. After completion of the reaction, the reaction mixture was cooled to room temperature, and the excess thionyl chloride was distilled off and 7.0 ml of tetrahydrofuran was added to the residue. Then, 2.1 g (21 mmoles) of triethylamine and 0.83 g (13.8 mmoles) of isopropanol were added and the resulting mixture was stirred at room temperature for 18 hours, after which a saturated aqueous sodium chloride solution was added. The desired compound was extracted with ethyl acetate and the organic layer was washed successively with diluted hydrochloric acid, a saturated aqueous sodium hydrogencarbonate solution and a saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was purified by a silica gel column chromatography (n-hexane:ethyl acetate=10:1) to obtain 1.0 g of the desired compound.

Physical property: nD 1.4400 (14.3° C.).

Yield: 79%. 

What is claimed is:
 1. A method for controlling agricultural and horticultural diseases of plants which comprises applying a 1,2,3-thiadiazole derivative represented by the general formula (1), or a salt thereof at an active amount to control said plant diseases: ##STR29## wherein R¹ is a (C₁ -C₁₂) alkyl group, and R² is a group represented by the formula:

    --N(R.sup.21)R.sup.22

{{wherein R²¹ and R²², which may be the same or different, are hydrogen atoms, substituted phenyl groups having one or more substituents which may be the same or different and are selected from the group consisting of halogen atoms, and (C₁ -C₆) alkyl groups, and unsubstituted phenyl (C₁ -C₆) alkyl groups with the proviso that R²¹ and R²² both are not hydrogen simultaneously.
 2. The method of claim 1, wherein the 1,2,3-thiadiazole derivative is N-(3-chloro-4-methylphenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide.
 3. A compound of N-(3-chloro-4-methylphenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide.
 4. A composition for controlling agricultural and horticultural diseases which comprises an inert carrier and an active amount of N-(3-chloro-4-methylphenyl)-4-methyl-1,2,3-thiadiazole-5-carboxamide of a salt thereof. 